Windows 10: No way to turn off forced v-sync? Issue with 144hz/60hz dual monitors.

Discus and support No way to turn off forced v-sync? Issue with 144hz/60hz dual monitors. in Windows 10 Support to solve the problem; I understand that Windows 10's DWM forces v-sync and triple buffering on every program and game running in Windowed mode. My problem is that I have... Discussion in 'Windows 10 Support' started by OfficialAlexM, Jun 16, 2019.

  1. No way to turn off forced v-sync? Issue with 144hz/60hz dual monitors.


    I understand that Windows 10's DWM forces v-sync and triple buffering on every program and game running in Windowed mode. My problem is that I have recently gotten a 144hz monitor and I am now using my 60hz monitor as a secondary.

    However, when a video is playing on my second monitor or anything that requires GPU acceleration, it limits the Hz on my main monitor to 60.

    I've already tried setting my main monitor to a multiple of the lowest refresh rate, which would be 120hz. That only fixes the stuttering, not the Hz locking.

    I cannot plug my secondary 60hz monitor to my integrated GPU since my motherboard (HP Tampa2 8437 Z370) doesn't support IGPU and doesn't let me activate integrated GPU alongside my dedicated GPU.

    I'm aware running games on exclusive fullscreen mode on my main monitor doesn't lock the framerate to 60 when something is playing on my secondary monitor, however that is not a solution as many games I play basically require to be windowed. And my usage style requires games to be run in windowed borderless.

    Is there a way to turned off forced v-sync on Windows 10, or is downgrading to Windows 7 the only solution to this god-forsaken issue?

    :)
     
    OfficialAlexM, Jun 16, 2019
    #1

  2. Dual monitor setup locks 144Hz monitor at 60Hz


    I've been running a multi-monitor setup for a while now, with an ASUS VG248QE 144Hz monitor as my main, and one or more spare monitors as secondary displays. I've set the ASUS monitor to 144Hz without issue in the past, while the other monitors stay at 60Hz.

    The other night, Windows wanted to update. I figured it was the usual patch session, so I let it do its thing. However, after restarting my computer, I noticed that my ASUS monitor would only operate at 144Hz if it was the only monitor plugged into the system. When I try to set it higher in the Nvidia control panel, it just reverts back to 60Hz after applying changes. I updated my graphics drivers (though I was only one version behind) and even sought a special ASUS driver for the monitor to resolve the issue, but nothing has helped.

    Did Windows recently add a forced refresh rate sync between all monitors recently? If so, that really sucks because I only own one 144Hz monitor.
     
    CaptainMurica, Jun 16, 2019
    #2
  3. 144hz behaves like a 60hz when any of my other 60hz monitors are running GPU bound applications.

    Hello there.

    I noticed, after upgrading to Windows 10, that the handling of "windowed borderless" and such is much different in comparison to Windows 7. I believe the Desktop Composition is to blame, but that is well known problem (forced vsync etc.)

    What I get is a bit more specific. When I use a GPU bound (game, hardware accelerated browser) application on my 60hz monitor, every single GPU bound application on my 144hz becomes 60hz.

    FPS is still shown in the real numbers (certian apps/games 200+) but the actual refresh rate is 60hz. When one enables Vsync, it caps at 60, even though the refresh rate is setup in drivers and windows to be 144hz.

    When the application is run standalone on the main monitor (144hz), there are no problems. But even Chrome, when the HW accel is not OFF, forces the 144hz to 60hz.

    I'd just like Microsoft to look at the "non-average" PC user and make their OS optimized in every way possible. I have a high-end system and I can't enjoy my 144hz unless I use it exclusively. Considering it is current year I'd very much like to see some
    love for more-than-one monitor setups and for people that don't have a Pentium from 2004.

    My setup: GTX 1070; i7 6700k; DDR4 16GB.
     
    TomášRenner, Jun 16, 2019
    #3
  4. No way to turn off forced v-sync? Issue with 144hz/60hz dual monitors.

    Dual monitor setup locks 144Hz monitor at 60Hz


    As I said in the OP, configuring the monitors in the Nvidia control panel did not help.

    All the monitors are detected properly in Device Manager:


    No way to turn off forced v-sync? Issue with 144hz/60hz dual monitors. [​IMG]


    If it were a video driver issue, then why would the multi-monitor setup break after a Windows update? The GPU driver did not change until I updated it in an attempt to solve the issue.
     
    CaptainMurica, Jun 16, 2019
    #4
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No way to turn off forced v-sync? Issue with 144hz/60hz dual monitors.

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