(primarily associated with Revision 15) is a performance-focused modification of Windows 11 designed to reduce system latency, increase FPS, and optimize resource usage for gaming and older hardware. It is developed by Mauro Cerquero and based on the Windows 11 24H2 build. Key Features & Performance
: Simply installing the ISO is often not enough; users are encouraged to manually configure specific "modes" within the OS to reach peak performance. WinterOs 2025