Bros machine runs these drivers, installed ontop of 12.6s without any issues, Noticed however When Firefox Opens or Youtube runs, I notice a clock spike in Graphics Overdrive up to the factory 3D Clock speed of the 6770 no noticeable issues as of flicker or anything, Im thinkin the program would need a 2D Clock profile.
Im Thinkin a Graphics card needs to have a priority capability, meaning the GC will always be in 3D Clocks when a Game is launched and remains that way even when other programs are open or you switch windows to prevent performance dips.