Hey, help me out, friends:
Most OSS slack alternatives (mattermost, zulip, matrix/riot) appear to use WebRTC for voice/video.
I've read a few things that has left me with the understanding that WebRTC's p2p approach means that it's innappropriate for group convos with >3 participants.
Has anyone used the above (or other OSS slack alternatives) for larger group voice & video calls successfully? Please lemme know your experiences!