Okay , i have just upgraded my GPU from a GTX 1060 to a GTX 1070 and am still having the exact same issue at the Jac. Oval . I was thinking it may have been my poor 1060 struggling @ 4K but this 1070 is doing the same thing . If i drive the first race its fine and the race is perfect , if before the race starts and i Esc to menu and restart its fine but if i let the race start and then Esc to the little onscreen menu and restart race from there it freezes . Come on , help a fellow out and give me some feed back please . There was another user who tested and found the same issue using a 970 and DSR to 4K .