I have tried several Dolby Vision files that were problematic on different Setups:
Plex Media Server on PC → Nvidia Shield Plex Player → LG C9 = Dolby Vision does not work (only HDR is shown in the top right corner) or the file does not even start to play.
Plex Media Server on PC → Nvidia Shield Kodi Player → LG C9 = Dolby Vision does not work (only HDR is shown in the top right corner) or the file does not even start to play.
Plex Media Server on PC → LG C9 Plex App = All Dolby Vision testvideos were just playing fine with the Dolby Vision logo showing up in the top right corner at the beginning! WTF?
So for what exactly have i bought an Nvidia Shield? Luckily i can still refund. But why is there such a different behavior anyways?
Also TrueHD is possible via the internal Plex App from LG C9. That also caused problems for at least one Movie, see this thread:
This also works on the internal Plex App on LG C9. So is the Nvidia Shield just crap or what (I got the latest pro version and everything updated)?
//Update:
I tested also some other mkv with HDR10 and the internal Plex App on LG C9 does not recognize the HDR on all files. Some are not showing the HDR logo in the top right corner when starting, this however works on the Plex Player on the Nvidia Shield.
I am new to 4k HDR (because of new TV) and i did not thought that it is such a trouble to play those files even with the investment on the nvidia shield not everything is working and i have to switch between different players. This is very disappointing. I normally would stream everything from my PC, but sadly there is also no way to play all files correctly on my TV with HDMI (Dolby Vision does not work on any software player for windows 10 and HDR only works with some modyfying on MPC-HC and that is way to complicated for me).