I’m not sure if this solves your problem, but it’s an opportunity to plug Jamulus . It’s FOSS, and one of the best solutions if your target is uncompromising sound quality/latency. Unfortunately, it doesn’t do video. I’ve jammed with a band on it and was very successful. Vide was on a phone or separate machine. When we performed, video was mixed by another user using OBS, and streamed on Zoom