[spditner]

There are a few of things to be aware of when deploying your own instance in jitsi-meet/config.js:

Firefox simulcast is still experimental (edit: and disabled by default), so Firefox is only sending HD to the video-bridge and no LD stream. The HD is then relayed to everyone even as a thumbnail.

If you don't need to see everyone's video all the time, set channelLastN: 5 or a similar number, and only the last N speakers video will be broadcast

If you don't need 720p (1280x720), change the constraints: video section to be something like 360p (640x360)

Enable layer suspension so that HD is not sent to the server when not needed: enableLayerSuspension: true