When was the last time you tried Jellyfin? I've been tolerating Jellyfin since I set it up, but 10.7.0 onwards (released March 2021) has been pretty stable for me.
About a month ago, I tried it on a Windows server and it was very slow, crashed a lot and the Web UI was much buggier than Emby's. Plus they don't have a Samsung TV app as far as I know which is a dealbreaker.