so Infuse holds no real benefit for me.
The tvOS Plex app currently has a massive stack of issues, including a critical one that overheats the third gen Apple TV 4K with high bitrate 4K remuxes to the point that it chokes on them and stop playing (I´m not joking!).
Infuse does not overheat it because it uses the Apple TV hardware acceleration for every aspect of their custom player (Metal), whereas Plex still uses Open GL for quite a lot.
My recommendation at this point is to use Infuse instead. Yeah, its not free, but it uses the Apple TV hardware and feature set to its full potential, and performs so much better.