Hey @sjefdekerk , are you still interested in 4K (3840x2160) resolution (nvidia custom resolution) on Pimax 4K, I upgraded to win 10 Pro (64 bit) because I could not make in win 7 my xbox one wireless controller to work. Now I know why you could not make it work... it is just simple: make a clean install of nvidia drivers version 382.53 !!! I use Piplay 188.8.131.52 and follow those steps above again (make custom resolutions)....I invite to all Pimax 4K users to try it and please feedback !!!