For Windows 11 users, the experience of navigating through File Explorer and the Start menu has often been marred by frustrating delays. Since the operating system’s launch in 2021, many have encountered a noticeable lag, with the Start menu sometimes appearing as if it were contemplating its next move. However, recent developments indicate a shift in this narrative, as Windows Insiders testing experimental builds report a significant enhancement in system responsiveness.
Microsoft Makes It Official
Marcus Ash, the Design and Research lead for Windows and Devices at Microsoft, has confirmed that these improvements are on track to be rolled out to all Windows 11 users, with a broader deployment anticipated by fall 2026. In a direct communication to Insiders, Ash acknowledged the feedback regarding the experimental builds, stating:
“Many of you shared that you can feel the improvements in Experimental builds, especially in overall system responsiveness. That feedback came with a clear ask to keep rolling these improvements out to everyone so your friends, family, and other people in your life can experience them too. Some of that is already underway. Start and taskbar improvements have started rolling out broadly, and you can expect more as we head into the fall.”
This initiative is part of a larger internal quality effort at Microsoft, focusing on migrating legacy UI components to modern frameworks like WinUI and enhancing performance consistency across core shell surfaces. While some reports have dubbed this effort the Windows K2 initiative, Microsoft emphasizes its commitment to quality, reliability, and performance in its communications with consumers.
What Has Already Shipped
Recent cumulative updates have already begun addressing issues such as File Explorer lag, Start menu stuttering, and disk image mounting performance. Notably, the optional preview update KB5120998, released on August 27, has enhanced the speed of the File Explorer Home page in production builds. This improvement was first observed in Experimental build 26340.9212 on the 26H2 track. Additionally, the stable update KB5095093 from June 23 improved File Explorer’s responsiveness during disk image mounting, as noted in Microsoft’s support documentation.
Another significant update, KB5089573 from May 2026, introduced a Low Latency CPU Profile designed to prioritize the Start menu engine, effectively reducing the micro-stutters that have plagued the OS since its inception. According to Windows Latest, this fix was rolled out to all Windows 11 PCs with the June 2026 Patch Tuesday. Furthermore, white flashes and rough transitions within File Explorer have been rectified for Insiders and are set to reach all users in an upcoming Patch Tuesday update.
Start, Taskbar, and Context Menus
Enhancements to the taskbar, Start menu, and context menus are also on the horizon. Recent blog posts from Microsoft confirm that the Experimental channel now supports taskbar repositioning on any screen edge, along with icon alignment options and a smaller taskbar size. Users can also personalize the Start menu by toggling individual sections, resizing it between Small and Large, and hiding their account name and profile photo. These features, currently available in Experimental build 26300.8553, are expected to follow Microsoft’s typical two-to-three-month path to stable release.
Context menus are another area of focus, with plans to streamline the right-click menu by reducing the initial load time of third-party extensions. Ash has clearly articulated this direction, stating, “We are working on making context menus faster, simpler by default, configurable to what you use most.”
When Non-Insiders See the Full Picture
Users on the 25H2 version of Windows 11 can anticipate many of these enhancements through cumulative updates before the arrival of the 26H2 update this fall. Keeping Windows Update active is the most straightforward way to ensure a smoother and faster system experience. The comprehensive suite of improvements—including updates to the Start menu, taskbar, search functionality, and File Explorer—is expected to be widely available with the 26H2 update, as reported by Windows Central and Windows Latest.
For those eager to experience these advancements sooner, enabling Windows Update and checking for optional preview updates will provide early access to the enhancements before they become part of the mandatory Patch Tuesday updates. The incremental speed gains are indeed on their way, promising a more efficient user experience in the near future.
