I dumped Plex years ago even though I paid for it. Too many issues with it. Constantly losing movie folders, unable to stream to the device I wanted to watch on, wrong codec, wrong sound, etc, etc. I gave up. I’m sure it worked fine for most, but it got to be a pain. Switched to Jellyfin and a DDNS address and have had zero problems since. And it’s free.

I had the opposite. Jellyfin just works. Plex kept losing my movie folders, refused to play videos, wouldn’t screen cast, had problems with audio tracks, there always seemed to be a disconnect between app and server, they refused to connect despite both being the correct versions. It worked great initially, but got steadily more and more problematic over time. I gave up, even though I’d paid for it, and made a jellyfin server and have had zero trouble since.

Don’t know why two programs should have such radically different experiences, they should just do what they’re supposed to.