I googled your issue and found a post on… That other site.

Search for “Sound Settings” in windows, on that screen to the right there is a button called “Sound Control Panel”, click that.

On the following screen you should find all your audio devices. There are 2 versions for your headphones, the normal stereo device and a second Hands Free one, right click on the Hands Free headphones and disable them.

Now open the “Recording” tab, there you should find your headphones among the other microphones you have connected, right click and disable them too.

Your headphones should now work ingame as the game has no way to access your microphone anymore and thus isn’t able to take away your headphones bluetooth audio bandwidth, however this obviously also means if you later down the line want to use your headphones microphone you’ll have to enable both of those things again.

Edit: Just disabling the microphone while leaving the Hands Free option up works too, but without a microphone there’s no point to ever use Hands Free and thus I like to turn it off to reduce clutter.

Nice to see that this is still helping people over all this time lol :)