Custom Resolution Utility (CRU)

[ToastyX]

(10-01-2022 09:26 AM)semaphore Wrote:  I have already cloned the EDID (hence it is appearing as an LG TV), but I can only select the HDMI 2.0 compliant resolutions. Also, I had created this through Nvidia Control Panel but I can't seem to recreate this anymore (as it always picks 4:2:0 without HDR, even for 2560x1440). I was then trying the cru tool to create this, but the resolutions don't show up in the Windows 10 resolution menu at all.

Basically, I think it was sending a scaled HDR10 2560x1440 @ 90Hz signal to the emulator. I think this is fine, since the stream was still 4K HDR10 @ 90Hz.

Summarizing my question, it's not possible to push 4K 120 HDR over HDMI 2.0 due to pixel clock limitations, but I am wondering if I can still stream this resolution. For that I need to be able to select this resolution from Windows regardless of the signal sent to the emulator. Not sure if my understanding is correct here though.

CRU can't create scaled resolutions, but what you can do is use CRU to get rid of all the 4K resolutions and make 1920x1080 the native resolution. Then you can enable NVIDIA DSR 4x to scale 3840x2160 down to 1920x1080. That should allow you to get 120 Hz and 10 bpc with HDR.