Custom Resolution Utility (CRU)

[witega]

ToastyX,

Thank you very much for the CRU application you have provided. I'm so happy it's available to use for the monitor I have.

I don't know if this has been brought up before, but I am curious if you could confirm if this is either a quirk in the Nvidia drivers or the CRU application itself or maybe the monitor itself.

I'm using an LG 27GK750F-B monitor that has an advertised refresh rate of 240hz. GPU is a Nvidia RTX2080ti. However there is a bug in the LG firmware that causes the monitor to stutter with its stock timings set to 239.759Hz. Once it's adjusted to 239.760Hz using CRU, the problem disappears. Here's the settings I'm using in CRU:







For whatever reason, sometimes the CRU settings are not enabled when the Nvidia driver is restarted after using the "restart.exe" application CRU provides. It sometimes takes going into "Recovery Mode" for it to take effect, or multiple restarts to finally get the CRU settings applied to the driver.

I can test if the driver is working correctly with the CRU settings if I run a benchmark program like Unigine Heaven. When Heaven benchmark test is ran, if the framerate is capped at 120FPS then the settings in CRU are not working. I see black line artifacts at the bottom of the screen as show in this video I uploaded below:

https://www.youtube.com/watch?v=PNmefTkyVdg

Once I go through the process of doing the "restart.exe" a couple times and go into "Recovery Mode", then running that same benchmark should have my framerate uncapped and it'll go higher than 120FPS.

Another way to test this is to use a game that has a poorly optimized game engine, I've chosen PUBG. After you click "Play" in Steam under PUBG, if the resolution switches to a much lower setting upon start up then reverts to 1080p in the Menu...once again the settings in CRU are not working. You can tell the lower resolution because the Steam notification and PUBG logo will appear in the top left hand corner in stretched magnified way. Almost looks like it dips down to 256x224 resolution before going back to 1920x1080. Again following the steps above to restart the driver and then when launching the game it will no longer start at a low resolution but stay in 1080p.

Also you will know CRU is not working because it will introduce these kind of black line artifacts in PUBG:

PUBG artifacting RTX2080ti #1
https://www.youtube.com/watch?v=5NLg_wd1mWM

PUBG artifacting RTX2080ti #2
https://www.youtube.com/watch?v=usw2L6OuFH8

And you will also experience stuttering in game.

There's also weird behavior sometimes when my monitor continually turns off and on after restarting the driver. I have to go in the monitor's on screen display, power off the monitor, leave it off for a minute or two, turn it back on, then restart the drivers again.

So I don't think there is anything wrong with CRU, but I wonder if it has something to do with my monitor and Nvidia driver?

Any help would be appreciated. I'm glad I was able to have a workaround for this issue. I was worried I had to RMA either the card or the monitor.