I would like to confirm that I have also discovered the camera related issue that someone else had posted in this thread.
When I first start SteamVR, my audio will be "normal" and sound alright (though not particularly great). If I then double tap the HMD or system button to activate the mic/cams and bring up RoomView, when I return to my app the sound is very, VERY loud and tinny. It will stay this way until I restart SteamVR. I have reproduced this many times. It is extremely obvious in Beat Saber.
I believe there may be something going on when it's switching "audio modes" between the normal one and the one with mics activated during RoomView.
