What games? Not every game supports HDR you do know that?
The ones I currently have installed are.
Resident evil 2
Resident evil 3 (demo)
Resident evil 7
crackdown
mortal Kombat
red dead
borderlands 3
I have a load more HDR games like Gears of war, monster hunter, devil may cry etc... but they are not installed because of low ssd space.
The ones I tested had different issues each game really. The resident evil games would go 1440p 120hz and boot up fine but were black and white in HDR as shown in earlier video. The games like crackdown booted up in hdr then at main menu the picture flicked on and off a couple of times and then switched off the hdr signal.
Red dead I did have working in HDR 1440p 120hz a couple of times but this was the biggest fail it kept switching to random resolution on start up like 560p 720p or just black screening. It took around 1 in 5 attemps to get red dead on in the right resolution and HDR.
Borderlands 3 was the biggest success and I had a lot of fun playing it at 1440p 120hz HDR with freesync on. Once it was on and running it was great but still had issues booting up and staying at desired resolution and hz.
The card seems perfectly fine on the desktop at both 1440p 120hz or 4k 60hz but just can't seem to keep it the signal for the games and will often flick to something else and my 1440p games keep defaulting to 60hz instead of 120hz.
I tried for days and read loads on internet but couldn't find any solutions just other people with same problems.
Anyway I have switched back to my gtx 1080 where hdr works on all my games and it has no trouble running 1440p 120hz on my 4k screen.
It really makes me appreciate what I have with my gtx 1080 where everything works first time.