I play on the quest and have this issue along with many others at random times. What happens is the audio will suddenly stop working on both ends, however, the little white speaker icon that appears when you talk comes on, but you can’t hear them and they cant hear you.
Sometimes, logging out and back in will fix this, other times you have to exit the app/game and reopen it and this seems to always work to fix it, but will happen again at a random time later. If you wait for long enough the sound will come back on both ends. (All other sounds are still there just the sound from the microphone doesnt work if that makes sense)
There are multiple posts about the memory issue that’s causing crashes where your vision gets locked and get booted to the homescreen of oculus. It appears to happen more frequently when a lot of people are online and in the same area. When playing isolated from everyone and have a decent internet connection I dont crash after hours of gameplay, yet the crashes still feel random.
This game is amazing and I hope this information helps the awesome dev’s and players for a better gaming experience in the quest