I’m running the recognize app on nextcloud which I think requires at least 4-5 GB RAM, so I have 6 dedicated to that VM. I’m pretty sure the recommendation for Ubuntu in general was 2 GB RAM so I gave my pihole half that. Home assistant wanted 4 GB, but I gave it 2. I think my Jellyfin server has like 6 and I have another VM with like 4. So that’s a total of like 19gb RAM provisioned. Plus I have a 2 TB zfs pool for my nextcloud VM. When I go into proxmox it tells me I’m using like 29.5 GB.
I suspect if someone was using docker or some other sort of containerization one could expect better performance than what I am getting with VMs.
I’m using a Jellyfin server with Symonium on android. It’s almost as good as plexamp, but sadly not available on other platforms. Symfonium will work with any media player that uses subsonic. My current jellyfin implementation is http with a VPN for external use.