No it's not. I stopped using Plex some years back and switched to jellyfin. Yes it requires more technical know how but it's really not that bad. Plex just kept asking for more money for stuff I thought would be free, so I quit out of frustration. Their buffering times are also longer than Plex was (for me at least)

I did notice some sluggishness when I used to torrent on my previous computer which had an HDD. I have sinced moved all torrenting to my NAS because it's always on, so I don't need to worry about turning on the torrent client (it's just always on)