Firefox USB(?) audio capture degradation

### Steps to reproduce

1. Use a USB audio device for audio capture, eg. USB webcam mic on mac(?)
2. Join a call with Firefox
3. Audio will start off fine but then after a few minutes, will end up robot-y sounding on the other side
4. Switch audio devices & back again and it's fine again for another few minutes

Unclear exactly what the circumstances are that cause this. This was on a call between myself & Florian where he ended up struggling to understand me until I switched audio devices. I could hear him with no problems throughout the call & he was also on Firefox.

It's not entirely clear we'd even have a way to work around this, but tracking here to gather information.

### Outcome

#### What did you expect?
Good audio

#### What happened instead?
🤖

### Operating system

macOS

### Browser information

Firefox 107.0.1

### URL for webapp

call.element.io

### Will you send logs?

No