The problem with the race time (Shift 2: Unleashed)

Hello!Help with the problem!Want to ride the race on time!Buy cars in the showroom!Take the Acura NSX,Alfa Romeo,BMW ALPINA,drives fine but just take an Aston Martin any fully pumped!I go to the race on time(highway Dakota Tri-Oval put 5 min.) and the game crashes!Who knows?What's the problem?Career going all right!