Questions regarding « brightness flickering » under VRR

Viewing 8 posts - 21 through 28 (of 28 total)

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  • #76608
    xello1

      Question regarding the test opengl .exe being used.

      I read that VRR flicker happens when the framerate fluctuates significantly. When I bring up MSI afterburner for fps overlay on the test exe, it doesn’t fluctuate much – between 60 and 62 mostly with some drops to the high 50s. Is this tiny fluctuation regarded as sufficient for flicker to manifest? Because I was under the impression you could somewhat remedy the situation by keeping a stable framerate and not having big drops or increases.

      #76614
      PCM2

        It’s possible Afterburner is misreporting that. You should observe the refresh rate that the monitor is running at (if displayed in the OSD with real time updates or using a monitor side ‘FPS counter’ to show it). The VRR flicker test causes significant and rapid fluctuations in frame rate such that it will cause most monitors to constantly cross their LFC boundary (like this). And therefore the refresh rate will suddenly double and halve a lot of the time.

        #76615
        Darryl282

          Hi PCM2, so I waited for years for glossy and ended up getting the Asus xg27aqdmg. Sadly not I’m on the verge of sending the unit back. VRR flicker is everywhere, and I mean game menu’s, loading screens and a lot of the time in game. Tested multiple games. I was wondering if you had any tips or tricks that could help with flicker. Using Oled antiflicker feature in the menu does help, but only by a fraction and introduces slight stutter which is a no-no. I guess this is what you get when you don’t listen to your gut. It’s otherwise a beautiful monitor, though an expensive one.

          #76617
          PCM2

            Unfortunately there isn’t anything else you could do, aside from trying to get used to using it without VRR. Though you’re clearly sensitive to stuttering, so that’s probably not an option. You might find it’s less obvious if there’s more ambient light in the room so that could be an option if you’re currently observing in dimmer lighting.

            #76621
            xello1

              Ah yeah Afterburner was not reporting the right value and I can see the monitor overlay shows rapid fluctuation. My PG32UCDP is arriving today after spending the last 8 years on a PG279Q, crossing my fingers this is not going to be an issue i am sensitive to. Thanks!

              #76623
              Darryl282

                Hi again PCM2,

                So something interesting I noted, when I switched to 180hz, the flicker was mostly if not all gone. Now I set a custom refresh rate of 200hz and used 200hz and the same story. It is not as smooth (most normal people would think vrr is working fine) as the other refresh rates, however it is smoother than Asus anti-flicker features. This is rather interesting. I’m certain gsync/freesync/vrr is not working properly, however, it’s being mimicked in such a way that you would think it’s working. The monitor shows refresh rate adjusting etc.

                #76625
                PCM2

                  That is indeed interesting. Sounds a bit like the effect you get with Samsung’s ‘VRR Control’ on some of their monitors which almost feels like a semi-VRR. You get some micro stuttering at times but much less pronounced than without VRR enabled at all.

                  #76626
                  Darryl282

                    It seems like *perhaps* LFC is disabled using the 180hz option. Alt-tabbing with a game that has low fps, like 30, introduces LFC at its worst: constant flickering. Not so with 180hz or the custom refresh rate.

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