To anyone considering using Jellyfin - it simply does not work properly for large libraries (1000+ movies/shows) in my experience.
Most of my issues are with the Auth system and random log outs, but I suspect that's my own network.
I have ~2000 movies (21TB), 435 shows (22TB), ~26000 songs (1TB); all running on an Intel 4770k w/ 32GB of RAM, a SATA SSD for the Jellyfin database, and a Tesla P4 for transcoding. It works well now and even worked decently before switching to the Tesla P4 for transcoding.