Custom Resolution Utility (CRU)

[maftul]

(05-03-2025 08:46 PM)ToastyX Wrote:  That's not anywhere near the limit for HDMI 2.1. Your monitor defines a maximum FRL rate of 48 Gbps, which is around 1777 MHz pixel clock, but NVIDIA 3000/4000-series GPUs are limited to 1350 MHz pixel clock without DSC, which is still enough for 5120x1440 @ 165 Hz. Try increasing the vertical blanking.

Thank you for the tip. I tried increasing the vertical blanking (and decreasing the horizontal blanking to keep the pixel clock below 1350), but that seemed to make the image corruption more frequent. Going the opposite direction (increasing horizontal blanking and decreasing vertical blanking), I seemed to get better results, but could not completely eliminate the image corruption. I have attached my current settings which exhibits corruption once every 10-15 minutes. If you have a recommendation for better settings that might help completely eliminate the image corruption at 165 Hz, please let me know. 150 Hz seems to be completely stable, so I will stick to that if I can't get 165 Hz to become stable.

P.S. Do you know what the pixel clock limit on the Nvidia 5000 series is?