Prusa XL update: Was the alpha firmware to blame?
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- čas přidán 9. 11. 2023
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Original video: • The 5 tool Prusa XL is...
Some commenters pointed out that my XL testing was all done wit the alpha release of the firmware and slicer. This is a fair criticism, so in the interest of fairness and transparency, let's rectify that.
The original video was already long and the problems I was seeing were posted on the forums by others BEFORE the alpha releases came out, hence why I didn't include a roll back test.
Hopefully this video confirms the problems are with the XL, not just the alpha firmware/slicer. Fingers crossed Prusa come through with some timely fixes.
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This is unprecedented levels of thoroughness, even for TT. Hats off to you for keeping everyone as up to date as possible and for doing so much testing to truly see what's causing what. You're doing a great job, Michael!
such a good channel and person honestly. not many asked for it, and he got the same results, but he still did it.
What an absolute chad, he released a response to the video he posted 7 hours ago.
He has an amazing workflow, that is insame. Props to Teaching Tech, keep up the amazin content!
GigaChad
Glad I cancelled by XL before delivery, clearly it's a bit of a joke and totally rushed out. Looks like it's way off being actually ready. You can buy 5 Bambu X1 carbons for that price and they are in different league all together. Even the A1 which costs less than 1/10 of the price actually sets the gold standard!. Great review !
If there is one youtuber with integrity, it's Michael .
Thats true
Well, especially if your own money, and a lot of it, is at stake. People that get free stuff are not always so honest and even if they are honest they often leave out important negative things because they're afraid of being cut off.
NO NO NO, it's not Prusa. It's because you're in Australia and all of the filament curls in the opposite direction there. See, the filament was made in the North, where it curls Clockwise, you're in the South where it gets all confused which way to go causing it to blob out. I will not be satisfied unless you relocate to the North and redo everything. I will be sitting here waiting for you to satisfy my eternally moving goalposts.
he must turn the printer upside down
Man, it’s hard enough to level a bed here while sitting on the roof now you’re telling me the filament behaves different too??
yes the vampires in Australia are not sucking blood but filling blood into their Victims. Bro TT is a blood giving vampire. RIP the 2 cute dogs , RIP Ayrton Senna.
So what you are saying then is that Bambu Labs are much better and smarter engineers than Prusa for making all their printers work perfectly all over the world, including down under... lol
Don't forget jetlag. Those filaments are going thru something extraordinary cruel.
please ensure you keep this and the last video up, don’t let anyone bully you into submission in the name of their god emperor josef
I am glad you did this. I was concerned the Alpha firmware was part of the problem. That said, the fact you even had to do so much work on a $5000 machine is an appalling engineering failure by Prusa.
this isn't a secret though, there are lots of xl owners with problems on youtube and very few who are having the success one would expect from such a high cost machine.
Utterly gargabe for that price.
Even though Bambu printers aren't open source, it doesn't matter much if the open source option costs you almost 10x more money and doesn't work even half as well. Sure, you may have to do material changes manually, but at least it works.
I agree, It shoudlnt be released in the state it is in. Hopefully it'll be worth the wait for Prusa to fix it.
@@TheCoffeeSquirel I hope so, too. But that means they need to get on some major changes and make existing owners whole, either via upgrade kits for free or extended return periods.
hats off to you sir for doing that.
You continue to provide extremely thorough reviews and prompt responses to otherwise misleading criticism, thank you
Thank you for the follow up!
This is incredible, thank you so much for taking the time to perform this testing, and for posting this update. And in record time, too! Outstanding!
This makes it crystal clear that the problem is not the alpha firmware or slicer, but rather something else that Prusa still needs to address.
Your thoroughness is exemplary. You have answered the critics.
Outstanding follow-through and dedication, to turn around with this just hours after your full review.
This is just an astonishing engineering failure. You’d think that with all the production delay, supposedly due to supply chain issues,they’d at least have had time to produce proper profiles.
I’m literally shocked that they’d ship something this shoddy at any price, let alone what they’re charging.
I'm with you. It's unconscionable for them to ship in this condition.
Michael brings the recepts as always, I'm a huge prusa fan but they have to be kept accountable
Thanks for giving this a go, i very much appreciate the update and willingness to test.! I had to revert my mini to the stable FW from the alpha as it was giving me a blue screen too often.
I really appreciate the extra effort for transparency and clarity!
This is why I always recommend your content!
Jeez it is night and day the quality difference between the A1 and the XL. If only the A1 didn’t poop so much. 👍🇦🇺😊
I admire your thoroughness and applaud your integrity. Thanks for being a trustable source for years now!
Thank you for this update Michael. This is why I LOVE your videos. Thank you
Good follow up. You could do some serious car mods with the dosh you spent on that XL. Let's hope it improves a *lot*.
I was thinking the exact same thing.
Yeah... Like two mods could have been gotten for 7k!
Thank you for investigating and testing! YGK3D just put out a video addressing the multi-toolhead layer shifting issues when changing heads. While I doubt the bad stringing you're having would be resolved with their hack (bumping the head to force consistent head attachment placement), it seems like more mechanical and technique fixes will be needed to make the XL shine.
Thanks for your work on this!
Good on you Michael. An expensive experiment so far. So much to offer, so little to deliver.
Good followup. Thanks.
Great and quick follow up. Hope Prusa makes the updates you recommended in the first video.
Also, did you ask the bank to refund those fees?! I have had good luck getting refunds when the rare bank fee is incurred.
I commend you for being so thorough. How disappointing this much hyped machine of 2021 is flawed out of the box.
Hopefully Josef pulls you in as collaborator before re-releasing this model. Great and thorough review as always. Thank you!
I will get my XL 5 head in appr. 2 weeks. I would think, that most of the hardware of the XL is near the final solution.
The stringing issues of the XL seems to be related to the issues Prusa has with the MMU3, which is delayed due to those issues.
During filament change, the Nextruder produces fine strings (called angle hair). These strings irritate the filament sensor in the MMU3 and cause a clog and an error. This happened also to my MMU2S a few times. But it is very seldom.
There is a blog article from Prusa about this and it sounds, that they are on the right way. But it takes quite a long print with over 200 filament changes to test it.
For the XL additional retraction and wiping to infill (I do not know if this is already an option in Prusa slicer 2.7) might solve or reduce the stringing issue.
I think it's a fair comparison with the Alpha firmware.. because Performance was much worse for me without the Alpha. Stringing was wild but I just deal with it. Luckily on large helmets / prints it wasn't as big a deal with a litle bit of heat, but it's still annoying.
Just had a go with the beta version of prusa slicer 2.7 and they have implemented a wipe technique from bambulabs which greatly helps reduce stringing. Have a go.
what a legend
I have a Bambu P1S and AMS on order and I'm looking forward to seeing if it does multi colour prints well. Not sure how often I'll use it, but I'm getting the kit because it would be nice to have a few spools of different kinds ready even if the prints are mono.
Good Job Michael. Even if the alpha firmware did cause problems, it still doesn't excuse the fact that people are having to use rely on the alpha firmware just to get modern features like input shaping.
Constructive criticism, pointers to the manufacturer, complete neutrality, highlighting positivity, and a critique follow-up.
Rarely have I seen such integrity, kudos to you!
Nice job for answering the people questioning your first video. This is how all content creators should act. Kinda shocking the cost of such a machine for it to not be perfect from the jump. Crazy world
to me, it looks like the 3d-printing version of a crypto-rugpull....it is that bad, sorry to all the prusa fans. i was one of them, in 2015 i guess..
I wonder how much money Josef made from selling crap with a name he has made famous himself.
This looks like heat issues hands down. What's the difference between your environment and others who seem to be working well?
I also have done a E-step calculation like on your website. 380 esteps is stock. I measured out, that one tool has 398 esteps and the second has 402 esteps. But it’s not possible to safe it to the eeprom for each tool. It’s only possible if you do a jailbreak and loose warranty….
Damn. Well hopefully prusa will reach out after these vids with a solution! Especially given the cost of this machine!!! Also what's going on with the injection moulding series? It on the back burner waiting for parts?
Good video
I was hoping you found a magic solution, now will have to wait on the community and Prusa
Good response video :)
Speaking from three years with the E3d toolchanger….
1. z hopping is essential for multi materials. Turn that off and you will see nozzle crashing.
2. Increase “Retraction on tool disable” to 11.2 mm for each extruder. This Retracts out of the melt zone BEFORE the tool leaves the print. As such the 3d print dogs approach becomes irrelevant since the material is moved up and out before the tool moves. Retracting out of the melt zone also stops the drool on to the nozzle seal which stops the string there as well.
3. Use the correct temperatures. Prusa’s presets are way too hot. You have to operate so that the timing is correct to go to and from the melting point. Too hot and it takes to long to cool down.
I should say that I get ZERO PLA stringing with my XL5. I also don’t use the prime tower. I’m getting perfect multicolor pla prints. PETG is another puzzle tho.
I wonder if the multiple head XL is having the same issues that MMU 3 is on MK 4. There is article on Prusa’s website talking about how the nextruder has an issue with stringing when changing colors. When looking at the results from the article and the ones shown in the video, they look close. I wonder if the MK 4 has the same issue but is masked by only having one head?
DAMN, way to shut the fanboys up in a righteous hurry.
Are you using 0.6 or 0.4 nozzles? So far from the searching I've done (because I REALLY want a Prusa XL), it seems like the XL works better with 0.4 nozzles. I hope they'll add that as a default option for purchasing in the future.
Just found a thread on Reddit pointing out potential issue with nozzle seats being incorrectly assembled out of the factory. That could lead to excessive stringing and oozing. Have you checked them?
I have to say, I am amazed Bambu was able to get their product to perform so much better than the Prusa out of the box.
Idk why you’re amazed, Bambu was started by ex-DJI engineers. They are great engineers. Prusa’s been building variations of the same printer for years, can’t compete any longer.
@@radish6691all in all still strange it isn't an issue with the Prusa MK4, and apart from the different motion system it isn't even that different
they're still the same extruders, hotends and whatnot, with a CoreXY system rather than a bed crapper but yea, this is really sad to see honestly, even though i always sorta despised Prusa's for basically selling glorified overpriced Mendel machines..
never had one and never will have one
just think it's sad mainly for the people that fell for Prusa's crap
prusa made really poor design decisions with the xl, the bambu is a lot simpler. xl was way too ambitious and way too complex and they are paying for it now.
It's easy to produce a quality product when your company isn't being run by an attention whoring narcissist who takes credit for everything and responsibility for nothing.
There was one problem that the non alpha slicer seemed to fix, the wipe tower brim
Great video. I think the comparison to the A1 isn’t quite apples to apples since the XL is a .6 nozzle and A1 is .4 nozzle. Curious how the A1 would print Nemo at .6
You have kept you cool a heck of a lot better than I would have. If I spent all that money and was getting prints like this I'd be spitting venom at Prusa. But it's still totally unacceptable to be shipped in this state as a finished product.
could you please try this again with the new beta 1 release of prusaslicer? it’s supposed to bring many improvements in regards to stringing, including better toolchange logic (travelling to wipetower and purging a bit before changing tool) + zhop ramping
I suppose You should had received the adapter for the E3D standard nozles. How does the XL prints with 0.4 mm nozles?
@YGK3D posted a video a few days ago with a fix that looks like it'd be applicable across all Prusa XLs for the layer shift issue - TL;DW: the extruders have a little bit of slop around the Z axis that results in misalignment when docking, which he fixed with a bumper in the +Y -X corner and a couple of lines added to the tool change g-code to bump the extruder back into alignment.
Kind of astonishing Prusa didn't get/spot/fix this issue in development considering how ubiquitous it seems to be though.
I have to wonder if the other models of tool changers out there will have the same problem (proforge 4, blackbox, WP-DAKSH, Tap-changer) and if the success some people are having reflect manufacturing variations (ie, quality control problems).
You are awesome for doing this, thank you. I definitely do not want anyone to think I am a so-called fanboy of Prusa. I have been a Prusa customer since the MK3 came out. Over the years, I have also been a customer of MakerGear, LDO for their Voron kits, and most recently Bambu Labs. So I feel like I can speak from a place of the experience I have had with having owned and used extensively around 25 different printers. I have also used quite a number of different types and brands of filaments, probably 90% of what is available to the general consumer.
When the XL was announced I ordered two of them, one semi-assembled and the other fully assembled. As everyone knows, when Bambu came out with the X1, things changed quickly. I found myself using the X1 a lot for mostly all of my production needs and my MK3S+ less and less. When I did use the MK3S+, I did so because I needed something printed perfectly - that is not just looking perfectly but functionally perfect too including proper layer adhesion which I do not get reliably on the X1 due to the fast printing speeds.
Well, the XL languished in production purgatory and I ended up cancelling one of my orders in favor of building a Voron 2.4 350mm from a kit I purchased from LDO. It was a long time to build this machine, and in the end I think I spent around $1800 for all of the premium parts and upgrades. I say this because I wanted to put this price into comparison of the XL.
I have since received the semi-assembled 5T XL and have been printing with it sporadically for about 2 weeks, when I can find the time to play with it. Yes, it should be printing much better than it has for you - the stringing, blobbing, etc. is generally crap for this cost. But I wanted to possibly put things into perspective, maybe to justify my own purchase, but more to let people know how I feel from where I see things. I am most definitely not trying to defend Prusa in any way but here is where I'm at:
1. This is a 5 tool changer, in a core xy style, with a fairly large build volume (granted they needed this large volume to fit the tools). I have had IDEX printers before (the MakerGear M3-ID) and so I feel like that was a pretty good introduction into independent head printing (though the MakerGear was extremely well built, it suffered from zero software support and in the end failed to make it as a company - they seem to be 99% closed now). I'm saying this because this is not just an XL MK3, the tool changing is very complex and just one of the complexities they had to design.
2. The bed is segmented. I know on my Voron 350mm, the bed is subject to bending due to how large it is. So having a thin, segmented bed is another large difference.
3. The extruders are all new. I know there is the ability to use the nextruder adapter to use standard V6 nozzles, but I'm not keen on using the adapter for hardened nozzles because I think they'll leak. Prusa really needs to ship this printer with not just 0.4mm nozzles in addition to the 0.6mm ones, but also at least one hardened nozzle so we are able to use the CF filaments they produced and demonstrate at all their events. Who knows when their hardened nozzles will be available again?
4. A huge disappointment for me was that the enclosure is not available yet. I mean, I do not plan on printing PLA and PETG with this thing. I am more of an ABS / ASA / PC kind of printer person. I am not even going to try printing anything like that until the enclosure is available (though it's going to be such a massive thing after it is all enclosed - I'm not even sure I will have room for something like it).
5. These print issues you are having, the stringing and blobbing, they should be solvable just like any other printer. I tend to think the 0.6mm nozzles being used for small models like this is a culprit, along with the print profiles not being as mature as ones for the MK3. The brush mod is possibly a good idea but maybe not necessary after further profile changes such as how it wipes after each tool change and where the prime tower is located.
6. The price. Well jeez the shipping down under is a killer I will give you that. For me in the US, I paid less than $4000 including shipping and import tax. That's more than twice what I paid for the Voron 2.4 kit but I also did not have to build it from scratch and it is a much more capable machine.
7. Prusa as a company has continued to be a leader as far as I can tell. I don't see Bambu or Creality or anyone else traveling the world for things like the Prusa User Groups meetups, etc. Showing off your gear at trade shows and maker fairs are nice, but I really can't spend the time or money traveling to places for the weekend just to ogle at machines that won't likely be ready to purchase for a while. The open source attitude seems to be a good thing for the community, maybe not so much for the company, but who am I to judge? Prusa reports expansion of their company all the time so they must be doing something right.
Well, in conclusion, I guess I feel like while the criticisms for the XL are mostly valid, they are also mostly short-sighted with understanding this is a 1st generation of a completely new machine that has some bugs to work out that can probably be fixed with software and maybe some new printed parts (another cool thing about Prusa machines).
So strange. I have basically zero stringing with polymaker and Jessie filaments on my 2-tool machine (.4 -> .8 nozzle sizes) as long as I drop the temps down to 205-210. And for the naysayers, the alpha PS and firmware have been sooo much better for me. Have had a tiny amount of stringing with PETG (far less than even the best print in your videos), but that was old stuff that has been sitting untouched in my dry box for 5 years in 30-40% humidity so I expected so much worse.
So I am not the only one with very good success on the xl. I have the 5 toolheads and I love the machine so far. I am running the alpha firmware with very few issues.
@@CoryTaylor904 looks like prusa QC is all over the place if people like michael are getting such inconsistent results.
tada 3d printing tried alphas for both slicer and the firmware and got a bit of improvement she also uses the 3d print dogs move thing. its very concerning these issues - considering cancelling the 2 head unit.
Do you get issues when you keep to just one colour on the xl, or does it just happen with multi colour prints?
Hi,
Prusa just released an update of Prusa Slicer - 2.7.1-beta1
There are some improvements regarding stringing behaviour in XL.
To help fight stringing and oozing deposition, the new just released PrusaSlicer 271 beta now implements ramping travel moves.
To fully harness the stringing reduction potential of the ramping travels moves a new layer change strategy is implemented while the ramping travel moves are active. Instead of going straight up to the next layer the printer head follows a helical ("screw thread") trajectory while changing layers.
!!! Helical layer change is used only if use ramping lift is enabled in extruder settings and the slope is nonzero and less then 90 !!!
@@OmDeLaTara or alternatively, you can use a blowtorch or a hot air ;)
In all seriousness I'll test this today. I hope it will help.
Hi Michael, just wanted to warn you that most cheap "brass" brushes I've found are still in fact nozzle scratching carbon steel merely coated in brass. You can check for steel content with a magnet. Cheers
One thing i find odd about XL is nozzle idel temp is is alot lower then the idel bed or room temp. Do you think could be issue?
is there gonna be a video on ttracing anytime soon?
💕👍
It would be interesting if You print 5 temperature towers using the 5 heads. Also with the prime tower less close to the printed objects.
I'm not that knowledgeable about the XL but I think Prusa is trying to fight the stringing and oozing with Prusaslicer updates. The latest 2.7.0-Beta1 has a new feature, namely "Ramping Travel moves". This seems to be specific for the XL, but wrapped in a regular (beta) slicer update. This could be an solution to one of the problems that many have with the machine. But then it needs to be adopted by other slicers like Orca Slicer to make it viable.
I feel like the people whom have criticised your last video haven't been following you or understand just how much experience you have and share with the community! Well done Michael for your response to these critics though .
Thanks, but it was a valid loose end. I'm both glad and disappointed to close it.
Outside of pain of bad quality how did tool changer compared to Bambu in terms of plastic waste?
I had a quick note about that in the original video. Much better for time and waste. The dice tower has a comparison here: czcams.com/video/C1a2c-qeTQw/video.htmlsi=IeFa4b4bNQI1Cr7a&t=1286
I am waiting to complete my 5 changer pre order but honestly after watching this i don't think i can go through with it. It just seems like too much of a downgrade from my x-1 carbon. I really wanted the larger build volume but i think ill just have to wait until Bambu releases a larger printer.
I'm not trying to convince you to bring daily updates to this story, but it would be nice to know if PrusaSlicer 2.7.0 beta 1 helps.
yep , it is clear prusha rushed this one out the door , it maybe needed a month or 2 of tuning to hit the shelves .
its really annoying and heartbreaking seeing a prusha product this bad ,but we love prusha and this tough love helps us the consumers and helps them to stay in shape and deliver actual good product.
thankyou for your honesty and review
I did notice from your footage that it looks like the non-alpha firmware does do a better job at the bases of the wipe tower, so maybe there's one tiny positive? 🤷♂
PrusaSlicer 2.7.0-beta1 just came out and seems to address the stringing issue.
Have a new mk4, similar stringing out of the box.
I sure hope you keep posting on this. I also bought a multi head and at this point I am not a huge Prusa fan. I think this can be fixed and I am in hopes they will not ignore these issues. You are spot on!!
What about the layer shifts?
These are pretty standard problems for a toolchanger unfortunately. Everything (filament temp, retractions, EM, pressure advance) needs to be dialled in just right to prevent stringing. 5 times the tools, 5 times the headaches. Most of us operating toolchangers (E3d, Jubilee and other custom builds) have been hoping that PrusaSlicer will add some great new features to simplify things, but we aren't there yet...
Problems I'm seeing are down to a serious design flaw with the tool changer mechanism. The rigidity of the Nextruder toolhead to the carriage just isn't there - it wobbles all over the place. The system needs a complete redesign, IMO.
If you have the patience for it, Prusa has a blog post about new changes in PrusaSlicer 2.7 on their website under the XL buying page. There is also a YT unlisted video, that shows it printing a dual color Benchy in 36 minutes. The path the heads takes is different than how yours printed. It does a wipe on the purge block before and after it's done printing the model. So, I think they implemented what you were suggesting. Anyway, would love to hear if the new version of PrusaSlicer solves anything. I didn't take the plunge to buy the printer, since it's so expensive and backlogged. Plus, after watching/reading so much about it's problems...It just isn't polished to mainstream use yet. Best of luck! Keep us updated as you continue to tinker and test it!
Wow this pile of crap is even a bigger disappointment than my crapbot flow was and even more expensive. Thank you for being honest. To be fair my caftbot is actually printing really well now but that is because i had to tinker and upgrade which is very hard to do on this machine. For the kinds of prices these companies are demanding you should expect a finished and refined product. Bambu lab is way ahead in that department.
Can you make a video series on the Enraged Rabbit Carrot Feeder, please?
For $6k, I would be asking for my money back
anyone in the xl queue would be better off cancelling and going with a mk4 instead.
It would probably cost him more than that to ship the printer back. :)
My friend has an XL coming next month. I couldn't talk him into a Bambu ( I have two X1 Carbons). He wanted tool changers. And it's his 1st 3d printer. oh well.
I've just commented on your earlier video how disappointed I was. It seems the release version of the software is no better, or only slightly. It may be the release version, but it's still alpha quality. Users should not be used as testers, especially not for a machine that's two and a half times the price of the Bambu X1, and nearly three times the price if wanting it pre-assembled. At that price, it should be producing top quality prints out of the box. Unless they fix this quickly, it could be a real blow to Prusa's reputation.
Thank you for your thoroughness, even diving into the source code, and being prepared to give a bad review for a product from one of the kingpins of the community.
Yeah, I reckon I'm going to cancel my pre-order... Cheers mate!
Well, you better go the other way as well, trying LATEST alpha fw and slicer, as the latest slicer release is specially focused on multitool issues.
Also, textured sheet does not goes well with small PLA prints
The original video was exactly that! He used the latest firmware available, the alpha, and people told him that was the issue so I guess there's really no way for him to not get these comments 😅
I'm not sure why Prusa gets such a pass and so mush slack all the time. Yea, I know they have been around a while, but still...Between this and the hot mess of the MK4....good greif. No wonder people are excited about bamboo.
hmm, I'm a little disappointed with that result. I had expected Prusa to have done more, it had worked out of the box, especially for the very high price. A printer for the price, it just has to work.
I'm afraid they will lose market share to bambu lab if they don't do something about it quickly.
Think they may have leaned back a little too much in the years when they have been market leaders. A shame
Makersmuse stated, beginning this year : "Adapt or Die". Prusa still doesn't seem to take that statement seriously.
The lengths you had to go to as an experienced maker to figure this all out tells you all you really need to know about this experience. I'd want my money back.
try to scale the model to 150% and use 0.3mm layers. to compare to the 0.4 nozzle of the bambulab. 0.6 nozzles also ooze much more ...
Bummer, I hope Prusa gets this figured out. But i bet Bambu will get something in similar size about the same time.
It does look like the alpha firmware was responsible for the wipe tower brim issue at least.
Is it possible for you to return the machine and get a refund?
Damn, I thought this channel was called Teaching Tech, not Serving Stooges. Go easy on them, Michael; they know not what they speak of.
Obscene price for the performance. Very unfortunate.
Excellent work with the follow up, but it really shouldn't be necessary. Prusa advertised the alpha firmware and software as "bringing updated firmware and PrusaSlicer to make the XL faster, more reliable and more efficient." If they didn't want people to use it yet, they should have chosen more cautious language for their blog post.
The fact that it's labelled as "alpha" signifies that it should be considered unsafe and may not work. There was a time that companies would never give customers alpha versions of products unless it would fix a very specific problem a client was having. Unfortunately it is common now to label beta versions as finished and move onto the next version, leaving maintenance developers to fix issues. The two main operating system companies were at the "forefront" of this, each for a different reason. (Quotes because it's something that a company should not aspire to be a leader at.)
I would only install an alpha version of software if it fixed a very specific problem and nothing else was changed from the previous version. The alpha release from Prusa introduced a number of new features, such as input shaping. I would even be wary of installing beta software, especially early releases, unless it's a golden master (GM, a version that is intended to be released to the public but may not if a serious bug is found).
Lol The printer is clearley not ready. But this is true of all their printers when first released. This is nothing new.
For the cost of this machine it would be a disappointing purchase decision.
I used Prusaslicer gcode on my Kingroon KP3S every time i used it the prints would completely fail. All sorts of problems occuring.
I would do the same exact STL file on Cura and it worked perfectly no strings or any other problems. I think there is a code problem in Pusha slicer.
Hater gonna hate no matter how objective you try to remain.
You did your best and the printer just can't handle stringing well by design.