Ok, going to ask this question again. I cannot get rFactor2 to work properly. it always runs painfully slow. and eventually the car crashes and tumbles out of control in the middle of the track. I have now tried this on three different computers and I get the same result. WTF?
Go up the top of the forum to Settings (next to where you log out), click that and then on the left edit your profile, and put all your PC specs in that page. Then tell us what build you're on (hopefully 946), whether it's a clean install (preferable), and anything else that might be relevant.