QSV not working after restart

[Ergo]

Giving yourself permissions to the GPU with "chmod -R 777 /dev/dri/*" is only temporary.  When you reboot it will reset.  Follow our directions at the link below to permanently give jellyfin permissions to access the GPU.

https://jellyfin.org/docs/general/admini...on-proxmox

I guess you are referring to the "4.Add jellyfin user to the video, render and/or input groups depending on who owns the device inside the container." part.
But isn't that referring to the commands I already launched, after the chmod line, inside the the jellyfin CT while setting up everything? specifically "usermod -aG render jellyfin"; "usermod -aG video jellyfin" and "usermod -aG input jellyfin". Or is there something I am totally clueless about? Is the user "jellyfin" (I login in the CT shell with "root" but i guess the user is jellyfin, at least when i connect via webUI? Is there something else I should do on the Host? (for me the indication of point 4 isn't dumbed down enough but "jellyfin" user doesn't exist on the Host so I guess it's not it).

   

I guess, with the settings I linked, I'm also running a privileged container (unprivilged container=no). I'm honestly stuck