Upgraded the server to the latest plexpass version (0.9.11.5). All my Android devices still get top notch quality when playing off this server. The app on the xbox 360 now plays at lowest quality, no matter which quality settings I choose, and the audio is out of sync.
I've tried changing settings on the server, but I cant seem to improve this at all. Does not happen with lower versions of plex servers.
I just noticed that after the update, Plex is transcoding all of my h.264 video streams when it didn't before. I wonder if this is the issue (transcoding lower quality, even through I set it to Maximum).