We’re running nextcloud 20.0.9 and Collabora CODE, latest version as a docker container (collabora/code as available on dockerhub). Then we have installed the richdocument app in NextCloud.
The host runs Debian buster, running the default PHP-FPM version (7.3). In front of that there is Apache 2.4 configured exactly as documented in Collabora Online Office – Nextcloud (at the bottom).
Both the Collabora container and NextCloud runs on the same host.
No warning or such in NextCloud configuration check, everything looks correctly configured.
When I’m alone, for instance in a Writer document, it is alright. I won’t say “smooth”, but it’s usable when typing. When we’re reaching 7-8 people at the same time on the document, there is a huge delay when typing something (like 1-3 seconds). Said differently, it’s pretty unusable.
The server doesn’t look that much loaded in terms of CPU. What could be the other cause(s) of such a performance drop ?