Microsoft Speeds Up Windows 11 With New Performance Improvements

Microsoft has confirmed that it is working to improve the speed and responsiveness of Windows 11. The company's Design and Research lead, Marcus Ash, has stated that improvements are being pushed to all users, with a broader rollout expected in the fall of 2026.

The changes are part of Microsoft's internal quality initiative, which focuses on migrating legacy UI components to modern frameworks like WinUI and improving performance consistency across core shell surfaces. This effort is referred to as the Windows K2 initiative by some outlets, but Microsoft itself describes it as a commitment to quality, reliability, and performance.

Users have already seen improvements in certain areas, such as File Explorer lag and Start menu stuttering, through cumulative updates. Optional preview update KB5120998 released on August 27 sped up the File Explorer Home page in production builds, while the June 23 stable update KB5095093 improved File Explorer responsiveness when mounting disk images.

Microsoft is also working to improve taskbar repositioning, Start menu size controls, and faster context menus. The company's May 15 and May 29 Windows Insider blog posts confirm that these features are currently in Experimental build 26300.8553 and will follow Microsoft's typical two-to-three-month path to stable release.