Ok, i play Battlefield Bad Company 2 on the PC and it seems like it lags which i have no idea why. I have a custom built gaming PC. Heres the specs:

CPU: Intel Quad-Core I5 760 2.8 ghz

Motheboard: Gigabyte P55-USB3

Graphics Card: Sapphire Radeon HD 5770

Hard Drive: Western Digital Blue 1TB 7500 RPM

RAM: Corsair 4 gb

I have a ASUS 24 inch 1080P monitor and im running Bad Company 2 on 1920x1080 at high. Please if you know why it lags tell me. I know that computers not as good as mine can run it w/o lag?!?!?!?