Overview
- Microsoft published the optional preview cumulative update KB5089573, which was made available in late May and delivered as a manual optional install through Windows Update and the Microsoft Update Catalog.
- The update contains a new Low Latency Profile that briefly raises CPU frequency for 1–3 seconds to make the Start menu, Search, Action Center and some app launches feel more responsive.
- Microsoft is enabling the performance feature through a Controlled Feature Rollout so many installs will not activate the boost immediately and IT teams can test stability before the June Patch Tuesday rollup.
- Insider and third‑party tests report measurable gains — testers saw flyouts up to roughly 70% faster and some app launches up to about 40% faster — and users can verify spikes with HWiNFO or force the feature with ViveTool.
- KB5089573 also bundles reliability fixes for Windows Hello, File Explorer, touch and Modern Standby plus device targeting for phased Secure Boot certificate updates, giving admins a chance to validate changes before wide deployment.