I’m not using dual boot anymore, but when I did, I always selected the partition from BIOS, which was totally fine for me. Are there arguments against it?

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