I used to run The Sims 3 on Windows Vista 64-bit at 50-60 fps.. But after changing to Windows 7 it dropped to 30-40. That's the only game I had issues with. I played CODMW2, Arkham Assylum and dirt 2 at 50 fps average. Would you say is a driver issue? I think that's a possibility since I used to have a terrible fps downfall on the dirt2 menu but after updating the drivers that problem vanished. Did anybody had a similar problem with that game or another?