@gavi Honestly peertube's resource usage isn't its issue. Like serving videos is intensive, who knew!
They even put a torrent feature in it as a self-optimising technique. If it ever had enough momentum to actually kick in, that would be your upper bound for what it can use; it wouldn't get more intense than that thereafter.
Peertube's main issue is its 1000-line config file that gets another 100 lines with no default every release.