Buffering on LiveTV

I have flex installed on a mac-mini and also on my Netgear ReadyNAS. I am using a HDHomerun Prime SD tuner on my network. When I stream LiveTV to my iPad, Apple TV, iPhone I get about 5 seconds of video then buffering then 5 or so more seconds and then more buffering. When I play movies from Plex it plays flawlessly. Are there settings that need to be made in Plex to fix this issue?

BTW, I also have the channels app on my Apple TV and it plays the live TV with no issues.