wiimote disconnect after 2 minutes play

[Metz90]

hello everybody, i have just installed then last dolphin version, i connected my wimote (with wii motion inside) by a bluetooth dongle (no brand) using windows driver.
first of all i need 5 minutes to connect the controller with the bluetooth, when finally i did it, i can play only 2 minutes (zelda skyward sword) and after the controller disconnect.
i tried to install every possible bluetooth driver, but it still dont work. early thank you for the answers .

i have a original wiimote

[JMC47]

If you're using MS stack, do you have Wiimote Audio on? That can cause disconnects.