I know hdr contents are much better than sdr ones but on some older TV models that don't came with a hdr supported panel, playing hdr videos on them is a nightmare. Not only the image is dim and dark, but also has a greyish looking on it. I found this out when I played Netflix with Mi box s on my old TV, nowdays I would say 70% content on Netflix are forced to be played in hdr and there's no way to switch it manually. The only option I found in settings related to the issue was hdr to sdr, but neither automatic or open seems to work. Do you guys have a similar problem? btw I am on oreo rgb8bit 4k2k 60fps
updated: 9th Jan. Official pie finally released this evening and after updating the problem solved.
Sounds like you have all the settings right. I don't know. I'm finding this MiBox S frankly to be a piece of junk. I bought one just to play with and it's pretty much let me down in every way. If you have your color space set to 8bit there is no way Netflix or any service should offer any HDR content to you.