FPS Problem with Modern Warfare 2

[94danfar]

Please give me details on what you did exactly because I have the same problem and it's very annoying.

[bobaafett]

Problem resolved.

When actived 2 network adapter, windows check network,and the process "system.exe" increases performance of cpu and fps down in game.

Deactivate the adapter network of hamachi solved the problem in my situation.