[movie78]

The first video in that link does not play at all. Just gives a failed message. I'll try and check the log files later.
The second video (Dynamic range) works without issue. I see the bit rate jumping upto around 65Mb and processing without issue but as suggested, this is at a 1080P output. It's a very good picture though. :-)

Tested that video in your link with the Zidoo X5 and it plays fine,the Zidoo X5 support 10 bit Hevc UHD

Have you tested how it Handel's 23.976 material yet. Is it played back correct or at 24 and does it automatically switch frame rate

Not yet,will do when i get some time...