I have tried to stream Population one on my Quest 2 to Twitch a couple of times via OBS and every time the stream starts, the audio is fine with the menu music & sounds streaming through to twitch fine, but when I then join a lobby waiting for a game, all of the in game audio cuts on the stream (yet I hear everything fine through my headset). The stream audio automatically resumes after the game finishes and I return to the menu lobby and the menu music and sounds start back up again. I have been in touch with the game developers and they do not know why this would be happening at all, it's as though it is a privacy setting to block broadcast when joining with other players in a lobby.
I have done a factory reset and allowed all permissions the game asks for. The streaming setup should all be fine because both the Oculus menu sounds & Population One menu sounds come through on the stream fine, which shows the game is broadcasting sounds, just not when joining a game lobby. I have streaming via casting to the browser and using browser capture in OBS, I have also purchased Air Receiver and used that as another capture source with the same results each time. I also sometimes get a high pitch squeal coming through the stream (but not heard in the headphones). These issues make it impossible to stream new VR content, which is turn will be damaging the potential to attract new players to both the game and VR itself.