Fullscreen Optimizations (FSO) is a Windows 10 feature designed to combine the performance benefits of "Full Screen Exclusive" mode with the convenience of "Borderless Windowed" mode. While it generally works well by improving speeds and allowing overlays, some gamers find it causes input lag, stuttering, or inconsistent frame rates .
Locate the application’s executable file ( .exe ), the desktop shortcut. disable full screen optimization windows 10
Close Registry Editor and restart your computer. Fullscreen Optimizations (FSO) is a Windows 10 feature