Disable Fullscreen Optimizations Globally //free\\ Jun 2026

Disabling this feature globally can occasionally break Windows overlays or specific productivity apps. If you only care about one or two competitive games, disabling it per-app is safer:

I did this, but my game still feels laggy. disable fullscreen optimizations globally

: Tick the box that says Disable fullscreen optimizations . Apply : Click Apply and then OK . Should You Actually Do This? Apply : Click Apply and then OK

If you are playing an older DirectX 9 or 11 game and feel input lag, turn it off. If you are on a modern DirectX 12 title, you’re likely better off leaving it alone. AI responses may include mistakes. Learn more If you are on a modern DirectX 12

The most effective way to apply this setting across all applications is through the Windows Registry.

Here’s a for “Disable Fullscreen Optimizations Globally” :