Apple Compressor vs Handbrake: Why does Apple do such a bad job?

Guys, why does Apple Compressor export look so bad at lower bitrates? Notice the "jumping" of the picture each second. I have been working with FCPX an Compressor for years now, and this effect is always there. Am I doing something wrong? Advice is appreciated, thanks!
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[@Ifatc]

this question is impossible to answer without knowing the settings in both programs

[@GhostWriter_Music]

might have tried this already, but change encoder to higher quality instead of faster.

[@PalmaVDO]

Thanks. That makes little difference, exvept for render times, unfortunately.

[@GhostWriter_Music]

@@PalmaVDO okay and how do you send to compressor? Do you send from final cut which is really a bad option, or do you export to a high quality quicktime file first and then use compressor which does yield better results.?

[@PalmaVDO]

@@GhostWriter_Music Send to compressor from FCPX. Why is that a bad option? Tries your suggestion, thanks! It makes no difference.