Well, in one of my previous post I stated, OpenGL can be profiled. This way all the old games you are referring too should work with the profiling system while still being able to keep performance intact for games like rage. Catalyst 10.6 is actually the last driver you would want to use for 4K unless you have hardware acceleration disabled. It will most likely result in a Bsod. (Tested on Windows 8.1, I don't have Windows 7 installed on any of my current HDD at the moment.) Also, I think I've stated this before this has already been resolved within my driver. So, DXVA should work for most users. (I'm still wondering whether or not Green Screens during playback of 1080p videos and below are due to the user setup or an actual problem with the driver). Other Thoughts Games that have issues with one driver can be profiled. The current Profiling System that is being work on should do this fine. I created a profile for Assassin Creed 4, Asphalt 8 and Company of Heroes 2 and all of them worked well. Previous Optimizations did not work well with this game. Random Thought I think I may need to Implement multiple Profiles to make things less tedious to deal with but it could turn out to be useless since I don't know how the driver is initiated for Crossfire. Crossfire drivers and Single GPU drivers don't always share the same results. For instance, when testing assassin creed 4 using the 10.4a driver on Windows 8.1, the game stuttered more than it would when using Performance Switcher C (CAT 10.11). In other words game play was noticeably smoother. I've tested other drivers from the late CAT 9.xx Series leading up to the 10.11 sets, however, I did not have much luck with those drivers. I will retest them again as I've been doing to make sure I don't miss anything, but for now I will leave things as they are until I upgrade my PC. (I Need More RAM, 2GB is simply not enough and will always be a problem when Testing games. Currently looking into DD3 Motherboards. that Support Crossfire. However if I can't find any withing my price range I may settle for something else.) Hmm, well I suppose it would be better to wait until the consumer preview gets release, however it should be in your best interest to report these problems to Microsoft to ensure that the OS is in a working state on release. The current version of Windows 10 also contains a bug that causes Windows Explorer to constantly restart until it eventually freeze after the background changes to a black screen. (I need to retest for this bug I can't seem to recall the exact details). Other Thoughts I don't plan on adding Support for Windows 10 until after release since things that work now can easily be broken in later builds.