* It's always been quite slow and flaky. Library not scanning things, media library not connectable, etc.

* Often very long delay from starting a show until it actually plays. Often very slow scrubbing/skipping.

* The automatic subtitle downloading never works. The manual subtitle downloading never works.

* The UI was getting on my nerves trying to offer "recommendations" — I download my own stuff and don't need an app to try to push my own media through some kind of algorithm that's broken — and constantly promoting the Plex streaming service.

I got fed up and set up Jellyfin with Infuse as the client. Now shows start immediately with no buffering delay, never have any glitchy library issues, and the subtitle downloading just works.

My main issue is that Jellyfin's matching can be quite poor. It often doesn't understand when episodes belong to a show. Also, Infuse's UI is pretty bad and doesn't align at all with how I think media should be accessed.