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***ToastyX*** · 04-06-2025, 11:30 AM

(04-06-2025 06:05 AM)January_0001 Wrote: AMDs control panel does not report the new range as 140, no. It reports 120 instead. This is after changing the CTA 861 data block\Freesync Range to 140hz as well. I have however tested this with the HDMI 2.1 ranges changed as well. And it still reports the same

Then AMD's driver is ignoring changes to the VRR/FreeSync range.

January_0001 · 04-06-2025, 02:39 PM

(04-06-2025 11:30 AM)ToastyX Wrote:
(04-06-2025 06:05 AM)January_0001 Wrote: AMDs control panel does not report the new range as 140, no. It reports 120 instead. This is after changing the CTA 861 data block\Freesync Range to 140hz as well. I have however tested this with the HDMI 2.1 ranges changed as well. And it still reports the same
Then AMD's driver is ignoring changes to the VRR/FreeSync range.

There is one change that I found interesting. I changed the load order of DisplayID 1.3 and it DID catch it, believe it or now. BUT now I get VRR instead of freesync premium pro and I'm stuck with 8bit color (8bit color idc about, literally 0 difference in SDR). But is there difference between VRR vs Freesync Premium Pro, usability and performance wise?

***ToastyX*** · 04-06-2025, 05:28 PM

(04-06-2025 02:39 PM)January_0001 Wrote: There is one change that I found interesting. I changed the load order of DisplayID 1.3 and it DID catch it, believe it or now. BUT now I get VRR instead of freesync premium pro and I'm stuck with 8bit color (8bit color idc about, literally 0 difference in SDR). But is there difference between VRR vs Freesync Premium Pro, usability and performance wise?

CTA-861 is supposed to come first, then DisplayID 1.3. VRR is HDMI's implementation and FreeSync is AMD's implementation. I don't know what the difference would be. Both should support HDR and 10 bpc.

maftul · (Last edited: 04-09-2025, 06:17 AM by maftul)

Does anyone have experience using CRU with 5k monitors? I recently got an MSI MPG 491CQPX, and it looks like MSI didn't bother adding 144 Hz refresh to the EDID of this monitor (even though the lower end MSI MPG 491CQP does support 144 Hz), and since 240 Hz can only be used with DSC (which then prevents use of Nvidia DSR), I am trying to add 5120x1440 @ 144 Hz to the monitor's EDID to use without DSC, but I cannot add it as a detailed resolution since the width of 5120 is not accepted, and when I add a Display ID 1.3/2.0 extension block and add the detailed resolution there, after restarting the driver, the monitor stays black and I have to use F8 to recover. I am wondering if anyone has had success with adding such resolution to their monitor's EDID using CRU.

P.S. The monitor is connected to an RTX 3080 GPU using HDMI 2.1, and I am running the latest Nvidia driver on Windows 10.

***ToastyX*** · 04-09-2025, 08:40 PM

(04-09-2025 06:16 AM)maftul Wrote: Does anyone have experience using CRU with 5k monitors? I recently got an MSI MPG 491CQPX, and it looks like MSI didn't bother adding 144 Hz refresh to the EDID of this monitor (even though the lower end MSI MPG 491CQP does support 144 Hz), and since 240 Hz can only be used with DSC (which then prevents use of Nvidia DSR), I am trying to add 5120x1440 @ 144 Hz to the monitor's EDID to use without DSC, but I cannot add it as a detailed resolution since the width of 5120 is not accepted, and when I add a Display ID 1.3/2.0 extension block and add the detailed resolution there, after restarting the driver, the monitor stays black and I have to use F8 to recover. I am wondering if anyone has had success with adding such resolution to their monitor's EDID using CRU.

P.S. The monitor is connected to an RTX 3080 GPU using HDMI 2.1, and I am running the latest Nvidia driver on Windows 10.

Run reset-all.exe and restart. Then run this and post the edid-test.txt file here: https://www.monitortests.com/edid-test.zip

maftul · Yesterday, 02:01 AM

Thank you for the response; I have attached the output. Please note that I also have a 4K LG C1 TV connected to the same GPU.

***ToastyX*** · Yesterday, 02:14 PM

(Yesterday 02:01 AM)maftul Wrote: Thank you for the response; I have attached the output. Please note that I also have a 4K LG C1 TV connected to the same GPU.

What happens if you delete the extension override data block in the CTA-861 extension block and then add a DisplayID 1.3 extension block with the detailed resolution in there? If that doesn't help, does it work if you disconnect the LG C1?

daydr34m · Yesterday, 04:20 PM

Hi ToastyX! Thanks for your program and forum support!
I have a question: I read the forum and found two people who wrote that after using CRU they had permanent artifacts and flickering on their monitors

Lenovo Y50 (post: https://www.monitortests.com/forum/Threa...80#pid7880)
and
MG279Q (post: https://www.monitortests.com/forum/Threa...ge#pid7878)

I want to know if using CRY is absolutely safe and cannot cause any damage to any components of my PC, including the monitor?
Thank you in advance for your reply!

LGBoy · (Last edited: Yesterday, 05:24 PM by LGBoy)

Hi ToastyX,

I don't know what I'm doing wrong. I am trying to get a custom resolution to work with DLDSR. My config is 3080/LG C1/Windows 10.

For a while I've been using a custom 3824x2151 on C1 for two reasons: there is no overprovision of pixels so with oled pixel shift screen is going few pixels out of bounds every now and then, and second reason is in the last few month I noticed a lot of dead pixels near the edges of the screen. When using slightly lower 3824x2151 these problems are gone.

I've been trying to get DLSS/DLDSR combo to work to increase image quality in games I play, but for the life of me I can't get it to work with my custom resolution. What I want is to retain 3824x2151 as windows desktop resolution and create a 2.25x 5736x3226 (rougly) DLDSR resolution for games where I will use the DLSS/DLDSR for superior image quality.

I followed a guide that said I needed to change 3840x2160 detailed resolution in CRU to 3824x2151 (to make 3824x2151 native resolution and therefor eligible as DLDSR baseline), but when I do that and restart, windows changes back to 3840x2160 and 3824x2151 is not in the resolution list anymore. I can still see it in NVidia driver in Change resolution panel/Customize but there I can't select it or delete it.

I'm sure there are more steps I need to do but I have no idea where to start.

Thank you in advance!

***ToastyX*** · Yesterday, 09:33 PM

(Yesterday 05:22 PM)LGBoy Wrote: Hi ToastyX,

I don't know what I'm doing wrong. I am trying to get a custom resolution to work with DLDSR. My config is 3080/LG C1/Windows 10.

For a while I've been using a custom 3824x2151 on C1 for two reasons: there is no overprovision of pixels so with oled pixel shift screen is going few pixels out of bounds every now and then, and second reason is in the last few month I noticed a lot of dead pixels near the edges of the screen. When using slightly lower 3824x2151 these problems are gone.

I've been trying to get DLSS/DLDSR combo to work to increase image quality in games I play, but for the life of me I can't get it to work with my custom resolution. What I want is to retain 3824x2151 as windows desktop resolution and create a 2.25x 5736x3226 (rougly) DLDSR resolution for games where I will use the DLSS/DLDSR for superior image quality.

I followed a guide that said I needed to change 3840x2160 detailed resolution in CRU to 3824x2151 (to make 3824x2151 native resolution and therefor eligible as DLDSR baseline), but when I do that and restart, windows changes back to 3840x2160 and 3824x2151 is not in the resolution list anymore. I can still see it in NVidia driver in Change resolution panel/Customize but there I can't select it or delete it.

I'm sure there are more steps I need to do but I have no idea where to start.

Thank you in advance!

You might have to delete all instances of 3840x2160 for DSR to work correctly with 3824x2151. They can be in the extension block in several places, such as in the TV resolutions and HDMI support data blocks.