Fullscreen Optimizations On Or Off Hot! Jun 2026

The primary argument is .

Should you disable it to squeeze out every frame per second (FPS)? Or is Microsoft actually trying to help you? Let’s dive into the technical reality of Fullscreen Optimizations (FSO).

DirectX 12 and Vulkan games do not even support traditional "Exclusive Fullscreen". Disabling FSO for these titles is generally useless and can sometimes cause instability. fullscreen optimizations on or off

In older versions of Windows, "Fullscreen Exclusive" (FSE) gave a game complete control over the display, which maximized performance but made slow and buggy. "Borderless Windowed" mode allowed for instant switching but introduced input lag and forced V-Sync through the Desktop Window Manager (DWM).

The decision of whether to keep on or off remains one of the most debated "performance tweaks" in PC gaming . Designed by Microsoft to bridge the gap between performance and convenience, the feature essentially forces a hybrid borderless mode on games—even when you've selected "exclusive fullscreen" in-game. The primary argument is

If you decide you want to force Exclusive Fullscreen mode, here is the standard method:

Newer Windows updates have largely fixed the early performance bugs associated with this feature. ⚠️ Why turn it OFF? Let’s dive into the technical reality of Fullscreen

For most modern systems and games, Microsoft recommends leaving this feature .

Try the game with default settings first. Only disable if you have specific issues. It’s not a magic FPS boost—it’s a fix for certain stutter or alt-tab problems.