@Seagull Thanks for all the suggestions. I tried using both GPUs with the method you linked, but unfortunately it turns out that only works with 1 integrated and 1 discrete GPU. With 2 discrete GPUs, my only option was the one plugged into the monitor, and if I customized the settings in the NVIDIA control panel, those were ignored.

I got a new monitor, an MSI G24C4, which has relatively low brightness (VA panel). I'll see how it works with the 3090.

  • MPaz replied to this.
    6 days later

    screengazer I recently purchased an Nvidia RTX 3090, and once I got it set up, I find it gives me eyestrain!

    try the combination "nvcolorcontrol.exe RGB 2" +win10(2004)
    https://www.avsforum.com/threads/2020-lg-cx%E2%80%93gx-dedicated-gaming-thread-consoles-and-pc.3138274/page-21#post-59699820

    at least when I using such a combination, the picture on the test smooth gradient changes on gf1030 (dithering may be disabled/changed)

        glvn Thanks, would you make a shortcut to the file? and then make it -> NvColorControl.exe RGB 2

        • glvn replied to this.

            Quad43 would you make a shortcut to the file

            i use simple .cmd
            echo y|NvColorControl.exe RGB 2

              19 days later

              Thanks, do you re-do this each restart or only once ever?

              This definitely helped!

              • glvn replied to this.

                Also interesting NvColorControl comes up on Malwarebytes with PUP.Optional.SearchProtect

                2 months later

                screengazer Hi, how are you feeling now with your new monitor? I'm also having issues with RTX 3090 on 3 different monitors, but it seems to make it even worse if I change color output format from RGB Full to YCbCr422. So I guess GPU doesn't cause me problems (with RGB Full), but all of these monitors cause it for some other reason. However, it might also be that the GPU is causing the problems - just different color formats use different kind of dithering and thus the symtoms are different (eye strain only VS. eye strain + hard to focus). But... I'm not sure how to test whether it's the monitor or GPU.

                  11 days later

                  Does anyone know why NvColorControl helps so much? This combined with IntelPWMControl (can't figure out which one is helping). Strange if it's the latter given I have Intel properly disabled, removed from Device Manager etc and there's no PWM (based off slow-mo mode on iPhone)

                    Quad43 Does it eliminate your symptoms completely? I'll also try this and would let you know.

                        MPaz I'd say makes 90% better. The best was using Ditherig 1.11 which I can never get running now 🙁

                            Think I made an error by doing the very latest Windows update, 1.12 won't work now either, only 1.14 and it doesn't help as much

                            How did you determine that it doesn't work anymore?

                              Sunspark It won't load - it gives me an error when trying to open it. Only 1.14 successfully runs 🙁

                                This is very peculiar. Only you have this problem. I wonder if it's a video driver version # issue.

                                I get "Failed to load a DLL" or "Failed to configure the registers"

                                Quad43 Does anyone know why NvColorControl helps so much?

                                I never ever got it to work ever... it always threw an Nvidia API error no matter the version of Win 10.

                                • glvn replied to this.
                                    9 months later

                                    Quad43 Thanks, do you re-do this each restart or only once ever?

                                    This definitely helped!

                                    each restart…

                                    But this is only one of the possible options 🙁

                                    NvColorControl makes changes to the registry at:

                                    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\nvlddmkm\DisplayDatabase\xxxyyyzzz]

                                    "DitherRegistryKey"=hex:db,01,00,00,10,00,00,00,02,00,01,04,f3,00,00,00

                                    and is consistent with the testing of temporal dithering switching on NV Quadro

                                    In the ideal case, such a modification of the registry should lead to a constant result.

                                    But in practice ...

                                    1. sometimes the launch of the NvColorControl leads to an explicit improvement immediately
                                    2. sometimes the launch of the NVControl leads to an improvement only after the preliminary removal of the registry branch \nvlddmkm\DisplayDatabase
                                    3. sometimes helps first turn on & then turn off dithering through the NvColorControl
                                    4. sometimes after the reboot, everything is fine without launching a NvColorControl (only with changes in the registry)
                                    5. sometimes nothing helps 🙁

                                    A lot of variables in this problem, I can point out the following:

                                    1. exactly depends on the model of the GPU (gf1030 in my case)

                                    2. exactly depends on the driver version (older is better)

                                    3. exactly depends on the operating system version (win 7)

                                    4. Perhaps depends on the fact that the any color profile is turned on

                                    5. Perhaps it depends on the monitoring programs like speedfan

                                    6. Perhaps depends on any program that switches video mode


                                      sometimes-perhaps-sometimes-perhaps-sometimes-perhaps for the year and there is no stable result

                                      I'm tired 🙁

                                      my current configuration at work Radeon X1650 + MS driver 8.56.1.16 from OS + Win7 = 8 hours of good work

                                      my current configuration at home 750ti + 361.43 + NvColorControl + win7 = acceptable result, sometimes


                                        Quad43 You can fully describe your configuration?

                                        1. Model GPU(gf3090?)

                                        2. Full version of the operating system

                                        3. Driver version

                                        4. Monitor connection type DP, HDMI..

                                        5. Color format RGB, YCbCr..

                                        6. Brightness range: full or limited

                                        p.s. I also used Ditherig 1.11 with HD630, but X1650 is better for me(with MS driver)

                                        p.p.s Sorry for my terrible English

                                          dev