Man, I hated it. The only reason I give Windows (and GPU manufacturers, I suppose) credit for improving it this gen is that I was trying to output PC games to a HDR TV fairly early on and I ended up having to choose between the crappy SDR output or playing worse looking games on console with HDR enabled and it was a dealbreaker. It is a godsend to be able to leave HDR on all the time on my monitors and just... not have to think about it.

SDR for me now either looks fine as-is or is picked up by AutoHDR and remapped. It now works as I would expect, and at high framerates and resolutions, too, as it seemed to automatically pick out the right type of DSC to fit my setup.

I'll be honest, when I got a high refresh rate monitor I was completely sure I wasn't going to be able to get it all working at once, based on previous experience, but it just did. It sucks to learn that experience isn't universal. Especially since the RX7600 should have all the hardware it needs to do this. That integrated AMD GPU I mentioned did it all just fine out of the box for me as well and is of that same generation, the 7600 should work the same way.

The temptation is to try to troubleshoot it with you and suggest it's a setup issue, but my entire point here is that it should work out of the box every time, or at least tell you what to push to change it if it's supported, I don't care what OS we're talking about.