fullscreen optimizations is a Windows feature that lets the OS share resources between a fullscreen app and the desktop more efficiently – allowing things like Alt+Tab to work faster and overlay tools to function. for most users it’s fine, but for gaming it can sometimes cause stuttering, input lag, or compatibility issues. here’s how to disable it.
What fullscreen optimizations actually does
When a game runs in “exclusive fullscreen” mode, it has complete control of the display. Fullscreen optimizations converts this to a borderless window behind the scenes, which lets Windows maintain desktop compositing. The tradeoff: Windows gets more control, but some games stutter or have higher input latency in this mode compared to true exclusive fullscreen.
Whether disabling it helps depends on the game and hardware. It’s worth testing for games with performance issues.
Method 1: Per-app (recommended first step)
To disable for a specific game or application:
- Find the game’s .exe file (right-click the desktop shortcut > Open file location)
- Right-click the .exe > Properties
- Click the Compatibility tab
- Check “Disable fullscreen optimizations”
- Click Apply > OK
This only affects that specific program and is the safest approach.
Method 2: System-wide via Registry
To disable fullscreen optimizations for all applications system-wide:
- Search for “regedit” and run as administrator
- Back up the registry first: File > Export, set range to All, save with today’s date
- Navigate to:
HKEY_CURRENT_USER\System\GameConfigStore - Right-click the GameConfigStore folder > New > DWORD (32-bit) Value
- Name it exactly:
GameDVR_DSEBehavior(capital D, V, R, underscore, capital D, capital B) - Double-click the new value: set to 0 to enable fullscreen optimizations, 2 to disable
- Close Registry Editor and restart
The naming must be exact – any typo and the key won’t function.
Testing whether it helps
After disabling, launch the game and compare performance. The difference is game-dependent: some see reduced stuttering, others see no change, and a small number perform slightly worse. If there’s no improvement, you can re-enable via the same steps.
Here’s a walkthrough showing both the per-app Compatibility tab method and the registry path:
