I installed Infuse on my Apple TV as the Plex client for Apple TV had buffering issues even over a hardwired 1 gigabit connection. It appears to be having the same issues in Infuse when connecting to the Plex server.
If I connect using standard Windows SMB file sharing, everything works perfectly. Even fast forward and rewind is smooth.
Is there any reason why using Plex has so many issues? I prefer Plex as I have other non Apple devices also that need to have the library stay in sync.
I believe this is something to do with the Apple hardware though. Plex runs perfectly on Roku.