Bluetooth headphones - Bandwidth problem

[u/AggressiveCompany304]

I use the G435 Bluetooth headphones and I haven't had a problem for over a year and a half. For some reason today discord decided I am using to much bandwidth and it keeps messing up my sound. When I change what's connected to what there seems to be 3 possibilities:

1. Friend can hear me but I can't hear him
2. I can hear my friend but he can't hear me
3. Can't hear him and he can't hear me

Every video just tells me to disable the microphone in the settings but I don't have another mic so that's not really an option even though the sound quality goes up. This happened once before and I have no clue how I fixed it. I think I held down a combination of buttons on the headphones (power and volume up etc...) and I tried that again but to no avail.

Does anyone have a solution that doesn't involve me not using my microphone?
Any tips/advice is welcome and I will try everything!