If all you're doing with the Pi is downloading/seeding torrents, you might want to consider running transmission-daemon by itself and avoid running a GUI at all on the Pi.
Transmission-daemon is a torrent client that runs as a background service (like the SSH server) instead of a GUI desktop application. I think there's a command-line tool you can use to interact with it, but there is also a web interface which does everything I need.
All you'd have to do is install transmission-daemon and set it up, then you can access the web interface via
http://pi-ip-address:9091/transmission/. (You'll have to make sure that you have your IP address whitelist set up properly).
I believe there may also be a way to use the GTK+ client on one machine to manage the transmission-daemon server on another machine, but I haven't tried it.
One quick setup article:
https://linuxconfig.org/how-to-set-u...-web-interface
Config file documentation:
https://github.com/transmission/tran...guration-Files