: By adding a layer between the game and the GPU.
Windows Registry Editor Version 5.00
How to Disable Fullscreen Optimizations Globally in Windows 10 & 11 disable fullscreen optimizations globally
Windows "Fullscreen Optimizations" is a hybrid mode that essentially forces games to run in a highly optimized borderless windowed format. While this allows for faster Alt-Tab switching and easier overlay usage, it can also: : By adding a layer between the game and the GPU
The most effective way to apply this setting across all applications is through the Windows Registry. disable fullscreen optimizations globally