We have an AppleTV4 and an iMac (Mid 2010 IntelCore i3 12 GB Ram). My network is full gigabit, Cat 6, wired through a DLink Gigabit switch that the AppleTV4 and the iMac are on. Watching video from a PC on the network or an iMac through the Plex Media Player work great with no need to transcode. To the AppleTV, it forces a transcode stream. Are there any settings for the Plex DVR to avoid transcoding? Unfortunately transcoding results in periodic stuttering of the playback (stalls, etc.). Plex Transcoder impacts CPU anywhere from 90 - 252% (above 100%, LOL). This is based on content originating from an HD Home Run Connect, which I already know is MPEG2 streams to begin with. Watching TV in the Channels app of course is no issue. I anticipate that the only way to avoid transcoding is to get a format for the files that the AppleTV likes in a native fashion. I'm willing to 'dumb down' the DVR recording settings just to get stable and non-transcoding options.
Yep - I don't want to buy a new iMac at this time.