It works (the core kernel is still pretty much Win8.1 so 8.1 drivers all work well). It also functions in virtual desktops but doing some heavy processing in the main window might degrade performance of FF14 in a virtual desktop to the point that sound might start skipping. This depends on your systems overall performance of course. But the reason for this is applications in virtual desktops get dropped to a new 'lowest' processor scheduling priority.