I have an RX6800XT and I use KoboldCPP to run models I download off of Huggingface.
I’m not sure how many tokens per second it generates, probably about 10?
If you want to try it yourself here’s a link to the Github page: https://github.com/LostRuins/koboldcpp
As others are saying, OSMC might work. Most difficult part is making it so that the TV turns on when you turn on the computer since ARC isn’t a thing for most computers.
I ended up giving up on OSMC and bought an Apple TV since nothing else got the “wife approval” factor. It’s better than Google getting my data, has a Plex client, and let’s me stream my Steam library.