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
It’s a bit involved to host the server but easier than most self-hosting services, in my opinion. Then there’s the audio setup which I think is super easy for digital audio folk but may be a challenge for folks who haven’t had to mess with digital audio much. The biggest thing people had problems with was turning off wifi and connecting via network cable. Reduced latency by leaps and bounds
Like I said, video was a separate device for my playing so it was kind of a non-issue. Mixing and production in OBS is way over my head.