I also installed LibreElec on my China H96 Pro + 32 GB/3 GB.
Main reason was that the Android version did not support framerate switch (very essential).
Actually everything is working the same as the post above from Chilluk, even HDR...wow!
Remote don't work, but I use CEC so I don't miss it.
Even zoom from 4K movies is supported and this made me very happy, Android could not.
I don't know if this is due to Krypton 17.4, Android had 17.3 ??
Or maybe from the good work of Kszaq 
There is only one thing that could be better:
I am from the Netherlands and Dutch people mostly use subtitles.
I tested som 4 K movies with extern srt subtitle and the combination of a panscan in the movie/subtitle causes a light hiccup at the moment that the subtitle appears.
A pity this is annoying if you know it, without this issue everything would be perfect for me.
If I boot back to Android with Kodi 17.3 it is playing smooth with subs (video frequency manual of course)
Without subs the same movie in LibreElec is also playing fine.
I read this issue before with heavy Korean subs:
hiccup with subtitles
or could this be caused by the 17.4 Krypton,
or maybe because of the fact that there are no fbdev Mali libraries??
90% happy at the moment and hope this subtitle issue can be solved.
Many thanks to Kszaq!