I’m running Plex via Docker on a Synology NAS. This has been working fine. When I tried to fire up a Jellyfin container, it was painfully slow. Clients barely worked. It wasn’t a good experience. It was several months ago, so I don’t remember all the details.
I don’t know if it’s a synology related problem or just Jellyfin but I have never gotten it running well. Even when it’s running I always get hiccups like server crashed a week later but appears green and running. Or trouble logging into the server using a third party client. Plex has always been perfect for me.
I’ve been running Plex on various devices for many years and have been impressed by the stability and usefulness. Grandfathered on the old lifetime subscription but I get that $750 seems excessive.
I just set up Jellyfin on an 1819 this weekend and so far it seems great, dunno if it’s improved or my device has bit more oomph - the ui on some devices is not as nice as plex but it’s been great
Jellyfin has a lot of alternative unofficial apps partly because of it ui as some people that did not like the look built something else. That is the case for almost every client OS
I waited for all that to finish. I tried to help it along by going through everything so it would cache it all. It wasn’t as straightforward as Plex’s visual, flipping covers over as the metadata loads in for each movie, providing a clear queue and sense of progress.
Once on the client side, it felt like those also needed to cache things. The only client that worked semi-well wasn’t a Jellyfin client, but could read from a Jellyfin server. I think it was called InFuse. With that as well, I spent hours simply navigating the app, going to every page, and waiting for it to cache everything so I could then navigate around. Then if I added something new, I needed to go to a page to show it and get it cached.