should be more stable, remember that higher refresh rates is way more demanding on a video card
60Hz to 120Hz is half way to 4K, 60Hz to 240Hz is same as 1920x1080 to 3840x2160
the gpu can handle it just fine... its not that its just a bug that makes vram core clock get stuck so Im sure AMD can fix this with a driver update...
Maybe next year's cards can handle 240 Hz monitors, 4K has been around a while
DisplayPort has usurped HDMI for UHD displays but now 8K is closer now that DisplayPort 2.0 bumped up the aggregate bandwidth.
Please can you report this?? Its a bug on the driver thats why propably im having issues with my 240hz monitor please take a look at my photos as well!