https://r-htpc.github.io/wiki/faq#what-is-hdr-video-and-what-do-i-need-to-take-advantage-of-it
DOLBY VISION AND HDR10+ MEDIA PASSTHROUGH IS NOT SUPPORTED ON HTPCS; If you need support for these, you’ll need a media device/non-PC, like a Nvidia Shield, Fire TV, Dune HD, etc..
I did learn a lot about my consumption, and believe me when I say, that I wish my options were broader. But it is how it is. And most of the content I watch is in HDR10+ or DV.
But yeah, everyone's milage may vary.