I never used Plex. Up until my kids were born I used to just watch my videos on my desktop, but now I find myself watching on my phone and TV more often. My Jellyfin server has been super stable for the last 6 months or so running on a super low powered machine and external hard drive. The only issues I have is with movies with Dolby digital, they tend to get out of sync when scrubbing the timeline. I am assuming that is due to the lower power of the machine. But, I have a 400watt desktop with a 7th gen i7 and a pascal Quadro P1000 that I am planning on migrating to. Then adding a 20tb internal drive for storage. Hopefully that will resolve the small issues I have seen with it.

I use traefik. I like it. Took a bit to understand, but it has some cool options like ssl passthrough and middlewares for basic auth.