Recently received the PG32UCDP, spent a few hours doing some work on it before the evening came to try some gaming out, that's when I first started to notice an issue. I was aiming to run this monitor 4k for every day stuff, and gaming I usually like to play 2560x1440.
I suddenly started to notice that when setting any game resolution to 1440p, full screen - the OSD would say it was 3840x2160 120hz.
Now, I've done countless hours of reading of very similar issues, with people saying to turn VRR off/on and a few other tricks like running the game in borderless mode, but I feel I shouldn't have to be messing about like this. Also the VRR trick doesn't work for some games, as the game minimises and it just resets the issue anyway. I've also tried the "trick" with DP having it furthest away from the PCI.
Windows allows me to set 3840x2160@240hz, 2560x1440@240hz without any issue.
I've tried all the included HDMI / DP cables, my own high quality DP and HDMI 2.1 cables and every time it makes 0 difference.
I've tried it on another PC which has a different 4k monitor, used for 1440p gaming also and same result, so it doesn't seem to be a driver / software issue.
Hooking up a secondary monitor to try do some extra debugging, when the game is set to 2560, windows reports Desktop Resolution 2560 but active signal resolution would be 3840 x 2160 120hz. For what ever reason, full screen games cause the panel to go into 120hz even though I can set 240hz on windows via Nvidia app or windows settings.
I am very close to returning this.
Model: PG32UCDP [MCM106 fw] - 2024_12_11
Windows 10, 64bit
RTX 4090 (Latest Drivers)
I have used the Nvidia uninstall tool, rebooted, installed drivers again.
Tested, same result, used DDU just to be sure, same result.
Reset monitor using "All Reset" - no difference.
Tested HDMI CEC both on/off
DSC Support is enabled
DisplayPort Stream is 1.4
I have found a rather hacky solution, but I don't know if I want to continue to use this method.
I added a couple of shortcuts to my stream deck, which have a command line to set resolution to 3840x2160@240hz, 2560x1440@240hz
When it's gaming time, I use the shortcut to set 2560x1440 240hz, load up my game, once the game is loaded the OSD either says it's 3840x2160 120hz or 2560x1440 120hz so I'll have to push the button again, which then updates the OSD to 2560x1440 120hz
Game has to be open, to the front, hence why I use the stream deck shortcut, and not set the resolution in Nvidia / windows myself.
