Hi, tried today the wonderful "grand circuit 67" and noticed that if you let the ai drive the car then swap at pitstop (with the I key) CTD granted. I thought it was the track but i did the same attempt on Spa 66 with the same result. Process is Start a race Press I Key Wait for ai to refuel (so don't load too much fuel at start) At pit stop press I Key ==> CTD Hope it helps for debugging