HDR has a couple of big issues.
First, the Windows implentation is bad. If you enable HDR, the desktop is in HDR and then all SDR apps (like 99.9% of everything) is simulated in HDR. Brightness is all out of wack. Switch between an true HDR app and not, and the screen flashes green a few times. So you really need to enable / disable HDR every time you use it.
Secondly HDR is IMO useless w/o a large amount of of backlight dimming areas or OLED. That display has 8 areas. So anytime an increased peak brightness is required, you'll get massive blooming.
Also personally $1500 for a VA panel seems craziness to me.
I see ...I have read a fair bit the last few days re: HDR....apparantly the Asus model is "true" HDR 1000 vs 400 600 etc......some isues with fonts on the desktop, however a review I read recomended disabling HDR in Windows and enable it only "in game" thru "in game" video options settings........
....I really do like my present Dell Alienware Ultra Wide monitor,,,,,,43" is out of the question.....I do like the 32-34" Curved for desktop though......and am entertaining going 4K to justify a 3090 purchase I suppose