Windows 11 is capable of managing performance efficiently without the need for additional optimizer or cleaner applications. It strategically utilizes RAM during idle periods for background tasks and reallocates resources for essential tasks when needed. Registry cleaning is largely unnecessary as orphaned entries do not impact system performance, and these applications may risk deleting critical registry keys. Windows includes built-in tools like Disk Cleanup and Storage Sense for cleaning temporary files, and web browsers have their own cleaning features. The main causes of sluggish performance are often user-installed applications, which should be regularly evaluated and uninstalled if unnecessary. Windows provides tools to manage startup tasks, and third-party applications may complicate performance optimization rather than enhance it. Alternatives like Atlas OS or Linux may be more beneficial for users seeking improved performance.