https://bugs.kde.org/show_bug.cgi?id=433094
S. Christian Collins <s_chriscoll...@hotmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |s_chriscoll...@hotmail.com

--- Comment #16 from S. Christian Collins <s_chriscoll...@hotmail.com> ---
If you have two monitors at different refresh rates and an NVIDIA graphics
card, I have found the following to result in buttery smooth, tear-free
perfection:

1. In NVIDIA XServer Settings, disable OpenGL flipping, then set
ForceCompositionPipeline=On for both displays (Display Configuration ->
Advanced... will need to save to X.org configuration file).
2. Put the following in /etc/environment (144000 = 144 Hz, adjust accordingly
to the highest refresh rate between your monitors):

KWIN_X11_REFRESH_RATE=144000
KWIN_X11_NO_SYNC_TO_VBLANK=1

This results in perfectly smooth, tear-free animation on the high refresh rate
display, and lower framerate, still tear-free animation on the other display.
Note that I am leaving out the "KWIN_X11_FORCE_SOFTWARE_VSYNC=1" setting, as
adding it results in dropped frames.

Thanks to the kwin developers for making these options available!

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