What I'd like is the ability to fix out-of-sync audio. My wife won't watch movies/tv/etc on Plex (on Roku) because some part of it creates an audio delay, and it really bothers her that the audio doesn't match the lip movement.
I've tried all sorts of settings, both server and client. It mostly only seems to affect my Roku, though, so that seems to be the issue. I just want to add a small video delay or something.