What the KB5089573 Windows 11 Performance Update Changes
The KB5089573 Windows 11 performance update is an optional preview release that accelerates app launches and core interface elements by enabling a new Low Latency Profile, delivering measurable speed gains for everyday tasks such as opening the Start menu, Search, and Action Center while also rolling out around 30 reliability and quality-of-life improvements across the operating system. According to Windows Central’s testing, system flyouts now open up to 70% faster and app launches improve by around 40%, tackling long-standing criticism that Windows 11 feels slower than earlier versions. Microsoft describes the update as one that “accelerates app launch and core shell experiences such as Start menu, Search, and Action Center.” Available for Windows 11 24H2 and 25H2 as an optional download, KB5089573 raises builds to 26200.8524 and 26100.8524 and is expected to be folded into a future cumulative Patch Tuesday release after broader testing.
Inside Low Latency Profile: How Windows Gets 70% Faster Flyouts
Low Latency Profile in Windows 11 is a CPU behavior tweak that pushes the processor to its maximum boost frequency for one to three seconds when a user invokes key system features. As PCMag reports, this burst happens when apps are opened or when elements like the Start menu, Search, or Action Center are triggered, giving a short, targeted speed boost right when it is most noticeable. This approach is similar to how other platforms prioritize foreground interactions, and it marks a shift from piling on features toward optimizing responsiveness. At launch, Low Latency Profile mainly benefits native shell experiences, not third-party apps, though Microsoft has confirmed broader app support is planned. The feature is being rolled out gradually after installation, so some users may not see the full system flyouts speed boost immediately. Advanced users can turn it on early with ViVeTool, but that requires manual command-line steps.
Beyond Speed: 30 Tweaks, From Windows Hello to NPU Monitoring
Although the headline gains are KB5089573’s faster app launches and snappier system flyouts, the update also delivers about 30 other improvements that target reliability, power efficiency, and usability. Windows Hello now favors biometric sign-in and keeps it as the default even if users have tried other methods; repeated PIN entry will remain in place until changed manually. Bluetooth Shared Audio (also called audio sharing) lets two Bluetooth LE Audio devices listen to the same PC output at once, and Multi-App Camera support allows multiple apps to access the camera stream simultaneously. Task Manager now offers deeper NPU visibility, showing neural engines integrated into the GPU on the Performance tab to help track AI workloads. File Explorer reliability is improved, clipboard history opens faster, Task Scheduler remembers custom column widths, and Windows Search can find files using as few as two characters, making routine workflows smoother.
Installation, Rollbacks, and How to Get the Update Safely
KB5089573 is a preview, not a mandatory Windows 11 performance update, so users and IT admins have a choice: install now for early gains or wait until it is included in a future cumulative release. Recent Windows builds have been affected by failed or rolled-back installations, and Microsoft acknowledges ongoing servicing issues, which it is addressing by strengthening the Servicing Stack Update and bundling it with this cumulative release to improve reliability. Some systems may still see rollbacks or delayed activation of Low Latency Profile, but Microsoft is actively refining the process. To install the update, users can open Settings, go to Windows Update, then Advanced options and Optional updates, and select the KB5089573 package. Because the Low Latency Profile features are rolling out progressively, even after a successful install it may take several weeks before the full KB5089573 faster app launches and interface boosts are visible on every machine.
Why KB5089573 Matters in Microsoft’s Broader Performance Strategy
KB5089573 is the first meaningful result of Microsoft’s K2 initiative, which was created after years of complaints that Windows 11 felt sluggish and bloated. Rather than adding more features, K2 aims to fix foundational performance, focusing on how responsive the system feels during everyday actions like opening the Start menu or switching tasks. Microsoft’s increased emphasis on Low Latency Profile Windows tuning shows it is now using strategies competitors have long relied on, such as aggressively prioritizing foreground interactions and short performance bursts. These changes also align with the company’s 2026 focus on stability and performance after a wave of unpopular AI-centric experiments in 2025. With system flyouts speed boosts, reduced power drain in Modern Standby, better USB and display handling, and clearer NPU metrics, this update signals that future Windows releases may be judged less on new features and more on how responsive the OS feels in real use.