Originally Posted by mafia97
got latest drivers , using SSAO but no MSAA because it usually decreases my fps in most of the games.
I have a GTX570 running at 800MHz, 4xMSAA and HDAO (most taxing AO), everything else on max, same monitor as you I get around 30FPS. You should have a few more with your 580. If you use the same settings and get less than 30FPS then something is wrong. Maybe running your CPU at stock has an effect, I'm at 4.2 with my Sandy Bridge. The game also is very inconsistent in keeping the framerates so you might want to check other forums for tweaks.