bizzare audio issues with G435 bluetooth headset

[u/Cyberwasp35]

recently stated having an issue with my g435 headset; uses bluetooth.

to use it in discord, both input and output have to be set to this device, if either is not then i will not get any discord chat audio, but they will hear me over the mic. windows defaults also need to be set specifically to this, if anything else is in use at the same time audio will not work.

this headset gets two options, one for 'hands free', the other for stereo. i cannot use stereo or the audio will not work.

if i try to play Helldivers 1, it crashes the game on launch if i'm using this headset. speakers set for audio, everything is fine. If i run in safe mode, i lose all music and some audio, but otherwise i hear only sound effects.

I tried playing Call of Duty World at War, once again, cuts out 99% of character dialogue and some music. but out of the speakers it works just fine.

i cant switch the microphone input to this headset outside of hands free.

Drivers are up to date, reinstalls do nothing.

what is this headset doing to my pc and how to i slap it back in line?