[spencerjford]

I disagree with everything in this thread except that, indeed, KODI will NOT play 4K HEVC / H.265 without stuttering. This is not a hardware issue though as other players will play it like for example, Potplayer
http://potplayer.daum.net/

I'm sure that in time KODI will eventually handle this format.

 KODI Indeed DOES play HEVC / H.265 without studdering if you have the correct hardware and you have hardware decoding selected in KODI.  (and assuming you have hardware capable of doing it.)