I have a pretty good comptuer I5-3570k (no over clock), 8 gig Ram, HD7970 and GSC2013 runs pretty well. I get about 60-100 FPS most of the time. However, I read a while back that performance can be improved through INI tweaks. Can someone link me to a good site on the the INI for GSC is setup or what lines I need to tweak?