This bug has been addressed several times, most recently on jitsi/jitsi-meet-electron#77.

However, that bug seems to be focused on OS X and importantly says,

if I turn my camera off altogether, the CPU usage does not go down

I’m opening a new bug because I’m on Linux and CPU drops as soon as I turn off my camera.

I’ve turned performance to one-above-lowest (where lowest turns off the camera) and am using a URL with: MyMeetingRoom#config.disableAudioLevels=true&config.channelLastN=3&config.startSilent=false and in the GUI set Disable automatic gain control.

I much prefer Jitsi to other tools and would be happy to help debug this if you can provide any suggestions.

Description

After about 1-5 minutes of running Jitsi (Firefox or Electron app installed via Flathub), all 8 cores on my laptop peg to 100 % and the system becomes unusable. Audio and video drop. Mouse becomes laggy. If I turn off my camera (in Jitsi) CPUs immediately drop. This is therefore due to outbound video, not inbound.

Possible Solution

Audio only.

Environment details

$ flatpak list|grep jitsi
Jitsi Meet      org.jitsi.jitsi-meet    2023.5.3        stable  user

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.2 LTS
Release:        22.04
Codename:       jammy

$ uname -a
Linux t480 5.15.0-72-generic jitsi/jitsi-meet-electron#79-Ubuntu SMP Wed Apr 19 08:22:18 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux