Optimized for Windows 11, also compatible with Windows 10, Windows 8.1, Windows 8, Windows 7 Operates whenever your PC is idle and removes junk files, registry fragments, and other unwanted clutter that confuses and slows down Windows Real time features scale back processor-hogging apps, unlocks trapped RMA and idle processor cores Improves a whole cache of under-performing network settings for smooth and speedy streaming, gaming, or browsing