Just watched the 1:36.41 lap and noticed a few things. First things first... when I point out mistakes and say "you should be doing this and that", don't take it personal.
-Are you still using automatic gear change? Cause if not, you may wanna turn off "throttle cut on upshift" in the player options. This will get you about 1-2km/h more on the straights. Try to use the shift light, too. You sometimes shift up a bit too early.
-Try not to clip the grass in front of turn 1. Dirt on your left front tire will make the car unstable under braking, and I know from experience that a car that changes direction under braking can be difficult to catch for mouse drivers. You may want to stay outside a little bit longer(only a few meters) when turning in for T1, but the exit looks good already.
-Chicane looks very good.
-For T3 (the one after the long straight) you should consider staying outside a little longer too.
-When turning in for the S at the end of the 2nd sector, you should try to be on the power. Lift or brake on the green curb, get back on the power, THEN turn in. Ideally you should be on the power through the whole S. Lifting inside the S makes the car understeer, so you have to slow down a lot to make the turn, and this hurts you on the uphill straight that follows.
-Try to use more of the curb in front of the last corner. This will give you more room to turn and more exit speed. Also, try not to let the car get sideways at the exit of the last turn cause this will cost you a lot of exit speed and time on the straight. If the rear starts to go, catch it quickly.