I was hoping it would be the card but obviously not the case. I can only suggest that somebody with an Odroid N2 box tries to play back the file using CE19 and see if they can re-create it. I have no issues playing it with CE Matrix or CE Leia.
I can’t think of anything else to try. Maybe try downloading some more 4k HDR content and try to isolate if it is an HDR only problem.
I did try searching the forum and found this thread:-
Yours doesn’t sound like a hardware issue to me, but I have heard that quite a few people have had issues with the N2 HDMI port being “flakey”. As I said, your issue appears to be related to changes from v9.2.5 onwards, so I think a dev needs to re-create it on another N2 running CE19. If it plays back correctly for them, then it may be a funky weird hardware issue of some kind - even though that seems unlikely to be the cause.