I recently bought an HD Homerun, and wanted to use it with Plex, so I also bought a Plex pass. I will really love this setup… if I can get it to work. Here is my setup.
Media Server is installed on my NAS, ASUSTOR AS6102T. I chose this one specifically because I thought it looked good for Plex.
I have an app on my Roku Express - This one is constantly buffering.
I also have an app on my Galaxy s8+ - This one only buffers, it’ll never start a TV program.
I was doing a little digging and changed the transcoder on the media server to the quickest setting hoping that would help, but it didn’t change anything.
I’m hoping I’m just missing an obvious setting and someone can point that out to me.
without knowing anything about asustor other than I see it is a NAS, my hunch is that Plex needs to transcode the content you are trying to watch, and your NAS does not have enough processing power to keep up. Ultimately, you need to get the content that you are recording, into a format which Roku understands and does not need Plex to transcode during playback.
One thing to try. After something is done recording, you have Plex ‘optimize’ it. See here: https://support.plex.tv/articles/214079348-example-media-optimizer-usage/. So go and optimize something (let’s say for “Universal TV”) and see if it plays back on Roku without buffering (fyi optimization will take a while, you can check progress in the queue under settings).
Since you are in the USA, the broadcasts you are receiving is mpeg2. Like @tachtevrenidis said, most likely PMS has to transcode the live feed in order for your clients to understand it
Based on asustor specs, your NAS has an intel celeron processor dual core Braswell. This celeron processor is not up to the task. However, the processor has a integrated GPU that can be used to do the transcoding job. You need the 64bit version of plex running and you need to activate the hardware accelaration under advance settings/transcoder.
However, PMS doesn’t support yet mpeg2 hardware decoding. So right now, even if you activate the hardware acceleration, your NAS probably will not be able to transcode it real time yet. Based on some comment in the NAS section, plex devs are working on it.