That’s not the point? The school provides a service and is (probably) not obliged to do so. If the school sets rules on this services, it’s OPs choice to either use or not use that service. 🤔

Mine runs very smooth. I guess it’s a matter of hardware or Ressource allocation?

I have a fujitsu thin client with a 4 core Celeron CPU and 8gb RAM. Nextcloud and Maria DB run in separate containers in proxmox.

I am the only user. I have only office, face recognition and maps installed. Other than that I use calender, contact and Foto sync.

Ye