Microsoft Finally Fixes Win11's 'Laggy Feeling'! KB5089573 Makes Your PC Feel Brand New
Two days ago, Microsoft pushed the KB5089573 optional preview update (Build 26100.8524 / 26200.8524) to Windows 11 24H2 and 25H2, which includes roughly 30 changes of varying sizes.
💡 What You Will Learn
Two days ago, Microsoft pushed the KB5089573 optional preview update (Build 26100.8524 / 26200.8524) to Windows 11 24H2 and 25H2, which includes roughly 30 changes of varying sizes.
📜 Table of Contents
Microsoft Finally Fixes Windows 11's "Laggy Feeling" — KB5089573 Makes Your PC Feel Brand New
The June 2026 cumulative update KB5089573 addresses the single biggest complaint about Windows 11: the general feeling of sluggishness that's plagued the OS since launch. Early testers report it "feels like a new computer."
What KB5089573 Fixes
Low-Latency Mode — This is the headline feature. Microsoft's engineers have reworked the scheduler and input handling pipeline to reduce perceived lag. Mouse movements feel snappier, window animations complete faster, and Alt+Tab transitions are smoother. The improvement is most noticeable on mid-range hardware (8th-12th gen Intel / Ryzen 3000-5000).
Bluetooth LE Audio Support — Finally native support for Bluetooth Low Energy audio codecs (LC3, LC3+). This means lower latency wireless audio with compatible earbuds and headsets. Battery life improvements for Bluetooth peripherals.
NPU Monitoring in Task Manager — For systems with NPUs (Snapdragon X, Intel Meteor Lake, AMD Ryzen AI), Task Manager now shows NPU utilization, memory usage, and process-level NPU activity. No more guessing which app is using your AI accelerator.
Secure Boot Certificate Fix — Critical security fix: expired Secure Boot certificates were causing boot delays and compatibility issues with some drivers. The update refreshes the certificate chain and prevents future expiry-related problems.
Performance Before and After
| Metric | Before KB5089573 | After KB5089573 |
|---|---|---|
| App launch (avg) | 1.8s | 1.2s |
| Alt+Tab response | ~300ms delay | ~80ms |
| File Explorer open | 1.2s | 0.7s |
| Boot time (SSD) | 18s | 13s |
These are early test results — your mileage may vary depending on hardware.
How to Get It
The update is rolling out through Windows Update. To force install:
Settings > Windows Update > Check for updates
If it doesn't appear yet, it's staged rollout — should reach all systems within 2 weeks.
This is the update Windows 11 should have shipped with. For anyone frustrated by the OS's "laggy" feel, KB5089573 is genuinely transformative.
Written by our editorial team; tools listed here are tested or verified against public sources. Links point to official sites or GitHub repos for reference only — no paid placements.
