What the Windows 11 Low Latency Profile Is and Why It Matters
Windows 11’s Low Latency Profile is a system feature that briefly pushes your CPU to higher frequencies during sensitive actions so app launches, the Start menu, and other core shell elements respond with less stutter and delay. Instead of upgrading hardware, Windows focuses CPU performance on the exact moment you click an app icon, tap Start, open Search, or call the Action Center. Microsoft introduced the feature in optional preview update KB5089573, describing it as a general performance improvement for interactive responsiveness. This move aims to close a long-standing gap where Windows has felt slower than rival desktop platforms when opening menus or small apps, even on fast machines. By turning those micro-pauses into near-instant reactions, the Low Latency Profile tackles everyday frustrations that make a system feel sluggish, without changing how heavier workloads such as gaming or rendering behave.
How CPU Bursts Kill App Launch Stutter
At the core of the Windows 11 low latency approach is a short CPU performance boost that lasts for roughly one to three seconds when the system detects a latency-sensitive action. When you click Start or launch an app, Windows briefly overclocks within your processor’s boost envelope, ramping clock speed and CPU utilization so the UI can finish its work sooner. According to WinBuzzer’s reporting on internal tests, this Low Latency Profile has been tied to “up to 40% faster launches and 70% faster menus.” Windows Latest and Wccftech note that utilization can spike to near 100% when opening the Action Center, which removes the familiar start menu stutter fix seekers have complained about for years. Because the bursts are short, the impact on sustained thermals and battery life should be modest, while the gain in app launch speed is immediate and visible.
How to Get KB5089573 and Enable the Low Latency Profile
For now, Low Latency Profile arrives through the optional KB5089573 preview update, which you must install manually. Go to Settings → Windows Update → Advanced options → Optional updates, then look for the 2026-05 Preview Update labeled KB5089573 for builds such as 26200.8524 or 26100.8524. The package installs like any other update, often alongside a .NET Framework preview, and may require a restart before changes take effect. However, Microsoft is using a controlled feature rollout, so installing KB5089573 does not guarantee instant access to the Windows 11 low latency behavior on every PC. Some systems will see the CPU performance boost in Start or Search quickly, while others may sit on the same build number for days or weeks before the feature flag switches on in the background.
Manual Activation with ViveTool and Hidden Flags
Because the Low Latency Profile is disabled by default for many preview users, advanced users are turning to ViveTool as a workaround. WinBuzzer reports that the feature can be forced on by enabling hidden feature ID 58989092, while Wccftech points to ViveTool’s GitHub repository as the place to download the utility. After installation of KB5089573, users comfortable with command-line tools can toggle the feature flag before Microsoft’s staged activation arrives. This is not an official path, and Microsoft does not expose any native Windows 11 toggle for turning the Low Latency Profile on or off yet. Once Microsoft finishes the rollout, the company’s plan is for all supported PCs on the right builds to use the profile automatically, without extra tools. Until then, manual activation remains an opt-in route for testers who want the start menu stutter fix as soon as possible.
Real-World Gains and What to Expect Day to Day
In practical use, the Low Latency Profile targets the moments when Windows 11 feels slowest: tapping Start, opening Search, triggering the Action Center, and launching everyday apps. Early tests highlight smoother animation and reduced start menu stutter, with reports that CPU utilization spikes briefly during these actions to eliminate micro-pauses. Still, Microsoft warns that results vary, and that the feature is not a universal accelerator for every workload. Heavy tasks such as video encoding or long gaming sessions will behave much as before, since the CPU bursts are short and focused on UI responsiveness. KB5089573 also bundles unrelated improvements like Bluetooth LE Audio shared audio, better NPU monitoring, Windows Hello tweaks, and File Explorer fixes, so users might notice general stability changes first. For most people, the main benefit is a system that feels quicker and more responsive without any hardware upgrade.