SO I am a long time Kodi user. I switched to Apple TV and PlexConnect a few years ago. I am now using Plex with the new Apple TV 4. Just recently, MrMC (kodi derivation) was released. So I purchased it to do some comparison.
Firstly, content type/audio is no problem, and its FAST. So let me explain.
A track with H4.1 and AC3 1080p.
-Plex, buffers a little, apparently sometimes transcodes the audio, just depends. (and yes direct play/stream is on)
-MrMc, gives an option for passthrough, no lag, not buffer, and fast forward and rewind, jumping chapters, 0 lag time and no buffering.
I then decided to try a track with DTS as I know Apple tv native can't play it.
-Plex = Transcoding on server
-MrMc = Passthrough to receiver, no increased CPU cycles to do this on server.
Now don't get me wrong, I am not trying to bash on Plex at all, however, I think the plex team could benefit from downloading this app and testing for comparison. The passthrough option that has always been present on Kodi is an amazing thing. Previous apple tv's could not play the content but had to use the systems limitations and the server to make it more agreeable to the Apple TV. Its now been proven that we can run native and passthrough the audio instead of letting the apple tv do the decoding. This makes for such a better experience. I am still not moving to MrMc but I hope the plex team can look into this. If we can tell the Plex app to do passthrough instead of whats native to the box, it would be amazing.
On a side note, can we get rid of the easter pastel color scheme? lol