Okay, here are my system specs: GPU: x2 radeon HD7770-DC series. CPU: i5-3570 When I am running on just one card, I get okay performance on below medium settings. In big battles, my FPS can dip as low as 40, out of battles it climbs to around 90-120. The higher the FPS, the more unstable it is: in an empty field, running around in circles and jumping cause my FPS to rapidly fluctuate 20-30 points. when it gets around 40, it usually jumps around a lot slower. When I run crossfire, if anything, my FPS gets worse. Sometimes it's not noticeable, but in big battles it can dip as low as 30, and this is with the same settings as above. I see the GPU and CPU bottleneck icons frequently, but one is not particularly dominant. I've heard that there are ways to configure your system to make PS2 actually benefit from Crossfire. Any help would be appreciated.