My frame rates in WoW are approximately halved with Catalyst 11.4 or 11.3 installed. In contrast Catalyst 11.2 and 11.1 work fine. So far I cannot find anyone else having this problem, so possibly it is something I am doing wrong. My 3D Application Settings are: Anti-Aliasing Enhance application settings Anisotropic Filtering Use application settings Tessellation AMD Optimized: On Catalyst A.I. Texture Filtering Quality: High Quality Enable Surface Format Optimization: Off Wait for vertical refresh On, unless application specifies Anti-Aliasing Mode Super-sample AA (though I understand SSAA does not do anything in D3D11) OpenGL Settings Triple buffering: On The only game I play is WoW. I sent Catalyst feedback after I tried 11.3 and 11.4 preview. Can anyone offer suggestions (other than to stay with 11.2)? If it helps I play on a single monitor at 1920x1200 60Hz, all WoW eye candy maxed.