Mewgenics HDR Dimming Fix: How To Stop Screen Brightness Issues

If Mewgenics causes your screen to dim after minimizing or closing the game while Windows HDR is enabled, the fix is simple. Change the Nvidia Vulkan/OpenGL present method to Prefer layered on DXGI Swapchain. This prevents the brightness bug instead of forcing you to toggle HDR every time.

This issue is not exclusive to Mewgenics, but it commonly appears when running the game with HDR enabled on Windows 11 and an Nvidia GPU.

What Causes The HDR Dimming Bug

When Windows HDR is turned on, some OpenGL or Vulkan games can conflict with Nvidia presentation settings.

Common symptoms include:

• Screen becomes dim after closing the game

• HDR looks washed out

• Brightness drops until HDR is toggled off and on

• Multi monitor setups flicker or flash

The game exits normally, but Windows HDR remains in a broken state.

The Permanent Nvidia Fix

Follow these steps exactly:

• Open Nvidia Control Panel

• Click Manage 3D Settings

• Scroll down to Vulkan/OpenGL present method

• Change it to Prefer layered on DXGI Swapchain

• Click Apply

Restart the game after applying the setting.

You can apply this globally or set it only for Mewgenics.exe under Program Settings.

Important note, this setting resets after Nvidia driver updates. You will need to re enable it when updating drivers.

If Your Screen Is Already Dim

If the screen is already stuck in low brightness mode:

• Open Windows HDR settings

• Toggle HDR off

• Toggle HDR back on

This restores normal brightness immediately.

Alternatively, pressing Windows plus Ctrl plus Shift plus B resets the GPU driver. This can restore brightness temporarily, but the Nvidia control panel fix prevents the issue entirely.

Who Needs This Fix

This applies if:

• You use Windows 11

• HDR is enabled

• You use an Nvidia GPU

• You notice dimming after exiting the game

If you do not use HDR, you likely will not see this issue.

Final Blurb

The HDR dimming bug in Mewgenics is caused by Nvidia presentation behavior with Windows HDR, not permanent monitor damage or hardware failure. Changing Vulkan/OpenGL present method to Prefer layered on DXGI Swapchain prevents the issue completely. Just remember to re enable the setting after driver updates.

FAQ

Does this only affect Mewgenics

No. Other OpenGL or Vulkan games can cause the same HDR dimming behavior.

Do I need to disable HDR

No. The Nvidia setting allows HDR to function normally.

Why does the issue return after driver updates

Nvidia resets the presentation method during updates.

Is this a hardware problem

No. It is a driver level presentation conflict.

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