[mceachen]

HDR needs a bunch of things to work correctly:

1) the software needs to render with the correct gamut profile (typically "P3.display")

2) the OS needs to have a reasonable color profile for the display that knows about the higher gamut

3) the display needs to be in the correct mode to interpret and render in the correct gamut.

My LG HDR400 display only has 1 obvious setting for HDR as a "quick" setting, but it behaves like what you're said, and that just drops gamma.

[cptskippy]

Laptops shipping with HDR displays don't even get it right.

[ineedasername]

If I'm on a standard Win10 Pro box, any idea what I should look for? I'm running a amd vega 64.