I’m using the exact same screen and it is what led me to write Lunar actually.
The screen is great, text is perfectly sharp in 4k on both M1 and Intel Macs. I don’t have the HDR function because I bought it 4-5 years ago but the colours look very good too, no washing out problem.
But the damn joystick man, I just couldn’t get past it and had to spend 4 years writing an app to work around it.
Are you sure that you have the UL and not the UK? The UL is HDR400 so actually not really hdr. The only thing is that macOS doesn’t seem to realise this and with all the toggling there are four states that occur:
MacOS and monitor no HDR: “correct” colours and brightness
MacOS HDR and monitor HDR: washed out colours / very low contrast
macOS HDR and monitor No HDR: very strange picture
macOS no hdr and monitor hdr: also washed out image
The screen is great, text is perfectly sharp in 4k on both M1 and Intel Macs. I don’t have the HDR function because I bought it 4-5 years ago but the colours look very good too, no washing out problem.
But the damn joystick man, I just couldn’t get past it and had to spend 4 years writing an app to work around it.