Disabling Simulcast due to FF80 bug
FF still has issues with simulcast with Jitsi, which was introduced lately.
Effects observed
- only low video resolution shown, see https://bugzilla.mozilla.org/show_bug.cgi?id=1663368
- connectivity issues with video
So we are disabling in all *config.js the option
// Enable / disable simulcast support.
// disabled due to FF80 issues, see #
disableSimulcast: true,