Since I purchased a new card (HD 5770 after 9600GT) I was looking forward to see no sluttering. I installed fresh Win 8 RTM 64. After all trials I still see sluttering and frankly I don't know what to do next. I use freshest drivers 12.10. Could you write your settings I mean: - 3D settings in CCC Anti-Aliasing preference manually Temporal Anti-Aliasing (using SmoothVision™ HD) Anisotropic Filtering preference manually Anisotropic Filtering to automated preference Catalyst™ A.I. setting Mipmap detail level Wait for vertical refresh setting Adaptive Anti-Aliasing Tripple Buffering - Do you use any other programs like Game Booster ? Thx in advance.