I use the following Debian packages in a Debian 9 container:
One-to-one video works fine, third person in conference leads to black screens everywhere.
CPU is not used much, so that is most likely not yet a bottleneck.
There are no Java exceptions nor errors in
Prosody is configured to use the “secure domain” configuration.
LE certificates are used for Nginx and Jitsi, while Prosody seems to use some adhoc certificates and keys for both domains.
Any ideas? Thanks in advance!