Custom Resolution Utility (CRU)

[marcgii]

(06-20-2026 12:59 AM)MUC Wrote:  

Quote:I'm trying to see is I can get 5k 180hz (or 165) working with DP1.4 with DSC.

Yes, in theory, that works.

5120 x 2880 @ 180 Hz RGB 10-bit (CVT-RB) = 2984.25 pixel clock = 345% HBR3 ... with DSC 8.75 bpp OK

Which Samsung monitor do you have? What is its native refresh rate?

However, Nvidia drivers for graphics cards with DisplayPort 1.4a HBR3 have a quirk where they ignore EDID overrides if the pixel clock required for the output signal exceeds 1350 MHz. This is the case for your setup. Consequently, you cannot use CRU, or rather, the changes have no effect.

Oh so this whole endeavor was doomed from the start. I have a RTX4090 and I was using it with the Samsung G80HF.
Funny thing is the monitor has a popup that keeps telling me to set it to the optimal resolution of 5k180hz.