How about the cpu slowdown utilities--like BirdDog says, did you still have to use these? Doesn't the sim run too fast under windows 7? The only way I was able to get it to work re timing and rocket, etc, was to install on an old win 98 computer.
My new DigitalStormOnline system:
i5-2500K--8GB Ram--AMD Radeon 6950
Win7--MOMO--MS FFB2--TIR5--27.5" Hanns-G