[Bug 58143] New: Variable refresh rate does not work properly with winewayland.

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58143

            Bug ID: 58143
           Summary: Variable refresh rate does not work properly with
                    winewayland.
           Product: Wine
           Version: 10.6
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winewayland
          Assignee: wine-bugs(a)winehq.org
          Reporter: jogamer1(a)protonmail.com
      Distribution: ---

When using Wine's wayland backend, variable refresh rate is not working
properly according to the monitor's built in refresh rate counter. It works
fine on xwayland.

Steps to reproduce:

1. Have a monitor and GPU that supports VRR
2. Set up a framerate limiter such as Mangohud, cap the game to a framerate
within the monitor's VRR range (most 1080p 144hz monitors with
VRR/Freesync/G-Sync have a range of 144hz to 48hz).
3. Launch a game in native wayland mode with 'MANGOHUD=1 DISPLAY= wine
game.exe' (assuming dxvk is set up and your GPU supports Vulkan), make sure the
game is in fullscreen.
4. Cap the game's framerate, if your monitor has a refresh rate on-screen
display watch it spike from the framerate you capped it at to the monitor's max
refresh rate.
5. Test it again with xwayland wine in fullscreen 'MANGOHUD=1 wine game.exe',
cap the framerate and actiavte the monitor's refresh rate on-screen display. It
will stay at/around the game's capped framerate.

Using KWin Wayland 6.3.4, Kernel 6.14 Mesa 25.0.3, AMDGPU RX 6000 graphics with
a 144hz monitor connected via Display Port. Most Unity engine games launch fine
in wayland mode for games to test.

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