Microsoft has started rolling out the update KB5089573 For Windows 11 versions 24H2 and 25H2, which introduce the Low Latency Profile (LLP) feature.
The update is primarily a performance improvement aimed at speeding up app launches and core shell experiences, including the Start Menu, Search, and Action Center.
Microsoft reports that LLP can deliver up to 70% faster flyouts and reduce app launch times by up to 40%. The update is part of Windows K2, Microsoft’s ongoing effort to address long-standing performance issues in Windows 11.
How Windows 11’s new low-latency profile works
When Windows detects an interaction that might otherwise seem slow, LLP briefly increases the CPU clock speed. Instead of gradually increasing the processor speed, Windows applies a short burst of maximum frequency that lasts between one and three seconds, allowing the task to complete before returning to normal operation.
Microsoft describes LLP as a standard part of modern operating system behavior. Similar techniques are already in use in macOS, Linux, and mobile operating systems to keep user-facing interactions responsive.
This feature targets specific scenarios where slow performance is most noticeable, such as opening the Start menu, triggering a search, launching apps, or bringing up flyouts and context menus.
How to get other KB5089573 changes and updates
The update includes several additional changes:
- Improved task manager visibility for NPU usage
- changes to windows hello
- Search results are displayed only after typing two characters
- Reliability improvements for File Explorer
- Reliability improvements for USB devices
- Reliability improvements for the sign-in screen
KB5089573 is currently available as an optional update. To install it manually, open Settings, then go to Windows Update and Advanced options. Click on Optional updates and select KB5089573 to install.
These updates are expected to be included in the next Patch Tuesday security release, which will reach a wider audience.
Why Low Latency Profile can’t activate immediately and how to force it
Microsoft is gradually introducing LLPs through a controlled process. Installing KB5089573 does not ensure that the feature will be activated. Some users may receive the update without Microsoft enabling the feature. There is no dedicated toggle in Settings for LLP. Once Microsoft turns it on by default on a device, it runs in the background without any user action.
Users wishing to immediately enable LLP can do so using ViveTool, which is an unofficial method that is not supported by Microsoft. To get started, install KB5089573 via optional update, then download ViveTool and extract it to a folder like C:ViveTool.
Open command prompt as administrator and run: cd C:ViveTool vivetool /enable /id:58989092. Restart the PC to apply the changes.
After restarting the PC, LLP should be active and running in the background. Since ViveTool is a community-driven tool and not supported by Microsoft, users should consider the trade-off between immediate access and waiting for an official rollout.
The update is currently available for eligible Windows 11 24H2 and 25H2 devices.
