Everything just works with Windows 7. I reverted back to windows 7 from windows 8.1 because 8.1 has an unfixable problem that some games will drop the gamepad after a few minutes. The only way to get the gamepad working again is to restart the game. However, the performance gains from windows 8.1 drew be back. So now I simply don't use my controller in the games that give problems. In my opinion windows 8.1 is a faster, smoother experience. = better