I am a big fan of Plex. I have been a Plex Pass subscriber for a number of years. For a few months, I adopted Plex to be my DVR. There have been some minor hiccups, but I think that is a good product. I am disappointed in actually watching live TV using Plex. All of my TV use Rokus. Whenever I try to watch TV, it will show loading, and I typically get a pop up indicating that it failed to start. If I go to my Plex server, exit the PMS, and start it again, this will allow me to watch a channel. Next, while watching this channel, I will usually see this live TV buffer frequently. I currently have my server reboot everyday to try to limit this behavior. I also read up on the transcoder, and the speed of this live TV is usually around 1.9-2.0, which seems to be adequate.
So, my question to you here is, how can I get a better experience for Live TV when using Plex? Again, I am using Rokus for this. And my server is pretty beefy, AMD FX(tm)-6300 Six-Core Processor 3.50 GHz and 24 GB Ram.