Microphone fails when game loads

Not sure who to approach about this - MS, for the driver, TS for the client, or WG for the game.

I have no problems at all with TS3 finding and using my microphone. Until World of Tanks loads. At that point, I get “error. could not open capture device”. Functionality returns as soon as I close the game.

I can force TS to recognise the mic by disabling it, then reenabling, but then the speakers cut out. “error opening sound device. sound device was busy”

Sades Armor headset, Win10, correct audio driver, latest TS client