The reason why your time differed so much was the game uses different timing points to in real life. That long straight towards the end of the lap is the finish with the whole middle of that straight used just for going slow to come in from lap. There is a metal gantrie just at the top of the straight which signals the end of the lap like wise there is one at the beginning where you start timing from at the end of the straight that whole middle isn't counted IRL.
The reason why your time differed so much was the game uses different timing points to in real life.
That long straight towards the end of the lap is the finish with the whole middle of that straight used just for going slow to come in from lap. There is a metal gantrie just at the top of the straight which signals the end of the lap like wise there is one at the beginning where you start timing from at the end of the straight that whole middle isn't counted IRL.