Xiaomi Gamepad to Xbox 360 controller Mapper.
Features:
-Rumble support
-Actually works well
-Tested on windows 10 by an actual gamer (not me) and he said there was no delays and everything is good.
Tested on windows 8 and 10 using the windows bluetooth stack.
Updates:
-Exclusive mode should now work on latest windows 10
-Fixed joystick range
Note for windows 7 and earlier you will need to install the xbox 360 controller driver:
https://www.microsoft.com/accessories/en-us/products/gaming/xbox-360-controller-for-windows/52a-00004#techspecs-connect