What ended up being the sign that one box wasn't enough anymore?
I run about nine containers on an old i5 mini PC, Proxmox underneath, and it's been fine for a couple years. I added Immich a few months back and now the whole thing crawls every time it runs a face detection pass, with Nextcloud and Home Assistant going sluggish at the same time. I've capped CPU shares in the compose file, which helped a bit but nowhere near enough.
What ended up being the sign that one box wasn't enough anymore?