Overview
- Microsoft published optional preview update KB5089573 for Windows 11 25H2 and 24H2 on May 26, 2026, delivering the Low Latency Profile and a bundle of reliability fixes.
- The Low Latency Profile briefly raises CPU frequency for one to three seconds during key UI events so the system completes work faster and returns to low power, which testers say makes flyouts and shell interactions feel noticeably snappier.
- Microsoft is using a controlled, staged activation so devices that install the update may not see the performance switch flipped immediately and wider enablement is planned as part of June’s Patch Tuesday.
- Advanced users can force the feature on today by installing KB5089573 and using the third‑party ViveTool command to bypass Microsoft’s rollout controls, but that approach is unofficial and skips Microsoft’s safety checks.
- KB5089573 also includes around 30 non‑security fixes such as improved Windows Hello sign‑in behavior, File Explorer and touch‑gesture reliability, Task Manager tweaks, and Bluetooth shared audio, and it is the first public deliverable from Microsoft’s multi‑year Project K2 to improve Windows responsiveness.