Custom Resolution Utility (CRU)

[chef_pooh]

I've been trying to get my Apple Pro Display XDR to show its full 6k resolution over Thunderbolt 3 on my Windows desktop, and I'm looking for some help. My motherboard (ASRock x570 ITX TB3) has a TitanRidge TB3 controller with DP1.4, so there's enough bandwidth to support 6k...but, as reported by others ( https://forums.macrumors.com/threads/app...t-29114824 ), Windows doesn't seem to expose a 6k resolution when using TB3. On the other hand, I'm able to support 5k with 10 bits (or even 12, despite the monitor only being 10 bit), which is more bandwidth than 6k8bit -- so I'm convinced this is an EDID problem.

I've tried the following:

1) Downloaded Bootcamp drivers, which don't really seem to install "drivers"; instead Apple installs a discrete Bootcamp helper app that lets you interact with the display to change brightness and color profile (but not resolution)
2) I've exported the EDID data of the display when in Mac (attached), and I'm looking into writing a custom driver using this data and Microsoft's documentation ( https://docs.microsoft.com/en-us/windows...itor-edids ). I'm not familiar with writing INF files on Windows, so I'm pretty sure I'll botch something.
3) I've tried using NVIDIA Control Panel to set a custom resolution, but that option is greyed out (screenshot attached).
4) I've tried switching from NVIDIA GeForce Drivers to NVIDIA Studio Drivers (both are available for my RTX 3090) to see if I have the option to load a custom EDID override, but, sadly (and inexplicably) that drop-down is not available (screenshot attached).
5) I've tried using CRU to set a custom resolution, but I don't think the device is showing up properly. The only display CRU finds is "NVD0000 - Generic PnP Monitor*" which has a max resolution of 640x480 (screenshot attached). This sounds like some sort of virtual display, and judging from the Registry I'm pretty sure it is (Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\DISPLAY is attached) since I'm pretty sure I want APPAE22 which (I think) is the ProXDR judging from the EDID.

Any help would greatly appreciated! Any suggestions?