I need help.

I play Crysis 2 in all Ultra at 1080p with DX11 and High res at more of 35 FPS. The problem that i have is that in MP i am with more of 35 and 40 FPS but the game looks slowly like in less of the 30 FPS and sometimes with 35 FPS the game looks good in some parts... and just with 45 FPS to more runs well... I try to say the games runs slow in MP than before...

This is a video of me in the SP...

http://www.youtube.com/watch?v=ibPbbz_QuXA&feature=channel_video_title

Telling us fps numbers don't mean nothing until you tell us what card you got as well as other system specs. *edit just seen the youtube vid with you specs, a gtx 570 should run it fine, try what I said below.

Also in mp there's a bug where it will start your first match a bit laggy, which the workaround is to alt + tab in and out of the game once.