I have recently updated my iMac to the newest version of OSX and was expecting to see a large jump in my FPS. I currently get around 30 FPS when staring at a wall. When there is lots of action it drops below 20 FPS. I have read on multiple places where people had over 100 fps. I have a 2009 21.5 iMac. Basic 2GB Ram and whatever the video card was nVidia. Is it my computer and I will never be able to get above 30FPS or do I just not have the appropriate settings? I find it hard to believe it is the computer, I use to run this on my old windows computer from 2001 and get similiar FPS. Can someone with a similiar setup help me out with what I should try my settings at to get better FPS? Thanks in advance.