Because Codemasters missed the mark with their system requirements big time. My 960M should crush the recommended 460 (which did seem kinda low) but when I start the game I can barely hit 50 fps at 720p on low settings (for reference, DiRT 4 runs 60 fps at 1080p and medium settings on my PC). Uggghh. Guess I am going to have to give up the option to use my wheel and get it for XBOX instead.