I have an HD 5970, and I use 11.6. Playing Pro Evolution Soccer 2011, the FPS decreases in replays and menus. Using 10.5, there was no problem. The game run smoothly everywhere, and there was no stutter. There have been the problem since 10.6. I tried turning of CrossfireX with RadeonPro, and I selected Super Sampling as an Anti Aliasing mode. The game run smoothly, but there were stutters. How to solve the problem?