Multiple Video Streams
How are you doing multiple video streams? (i.e. Facebook and YouTube)
I would think there would be an issue with multiple apps trying to access the camera and/or the mic at the sometime. Though, when it comes to the audio I would think you are using Loopback.
I think you might have mentioned this when you first started doing video. But I can't remember when that was.
The secret generally is to use one primary app that can distribute and manage the multiple secondary streams. I don't remember which app Dave is using for this but an equivalent example is Zoom's ability to live stream to Facebook, YouTube, and other platforms simultaneously.