By default Windows 7 uses different timers in the CPU to calculate stuff. HPET is the newest and best of these timers, but because of default combination of timers it takes longer time for CPU to keep up all the timers and sync between them. Forcing Windows to use HPET only improves performance and leads to greater FPS. Steps to enable this tweak: 1. Enable HPET in BIOS. If you have HPET option in BIOS then your hardware can support HPET. 2. Enable HPET in Windows by giving this command in ad