NV drivers have a lot of feature and compatibility bit flags which make easier to activate/deactive features. AMD on the other way doesn't. Tried Vindictus and everything works fine with my working build. Maybe it will work for you too. I don't know why, but hopefully next preview build will fix that. Other driver works? I'm testing with 12.7 beta but other versions should work as well. Hmmm, can't reproduce that behavior here, are you sure it's TriXX conflicting with RP? @topic, good news. Got alternate vsync working in DX9 and all above. New build incoming if I can find spare time this week to finish testing.