Low Latency Profile CPU Boost: A Detailed Overview

Microsoft recently introduced the Low Latency Profile CPU Boost technology as part of the Windows 11 KB5089573 optional update. This feature, described under the umbrella of "general performance improvements," operates in the background to dynamically boost processor frequency when interacting with the Start menu, Windows Search, and the Action Center.

However, there is no user-facing toggle in the Settings application to control this feature, nor does the system notify users when it is active. This absence of visibility may leave users unaware of its existence or impact.

For users with modern, high-performance desktops or premium laptops, the changes may not feel significant, as their hardware is already optimized for speed. Nonetheless, the Low Latency Profile could make a noticeable difference on less powerful systems.

How to Check CPU Usage Before Installing the May 2026 Optional Update

If you haven’t installed the May 2026 Windows 11 Optional Update, you can perform a baseline test:

1. Open Task Manager and navigate to the Performance tab.
2. Monitor CPU usage while interacting with the Start menu, Windows Search, and the Action Center.
3. For additional testing, launch built-in apps like Microsoft Outlook and Edge, as Microsoft has indicated improvements in app launch speeds.

It’s worth noting that Task Manager may not always capture brief microsecond CPU spikes due to its slower polling rate. To achieve more reliable results, consider using a tool like HWiNFO.

Using HWiNFO for Accurate CPU Monitoring

1. Download the free HWiNFO utility from its official website.
2. Launch the application and choose either Full Mode or Summary-only Mode.
3. With the tool running, interact with the Start menu, Windows Search, and the Action Center to observe any CPU activity.

HWiNFO provides more granular CPU monitoring, making it ideal for detecting subtle frequency spikes caused by the Low Latency Profile feature.

How to Install the May 2026 Optional Update

1. Navigate to Settings > Windows Update > Advanced Options > Optional Updates.
2. Locate and install the KB5089573 update.

If you choose to skip this optional update, the Low Latency Profile feature will be included in the mandatory June 2026 Patch Tuesday release.

Once your system reboots after installing the update, open HWiNFO and monitor CPU activity while interacting with the Start menu, Windows Search, and the Action Center. Some users may notice smoother interactions or faster response times, while others may not see significant changes due to Microsoft’s gradual release approach, known as Controlled Feature Rollout (CFR).

Bypassing Microsoft’s Deployment Queue

If Low Latency Profile is not enabled on your system, you can bypass the deployment queue by using the ViVeTool:

1. Open an administrative Command Prompt.
2. Navigate to your local ViVeTool folder.
3. Run the command: vivetool /enable /id:58989092.

After enabling the feature, restart your PC and use HWiNFO to verify if the Low Latency Profile is active.

How to Test if Low Latency Profile is Active

To confirm the activation:

1. Restart your PC and allow background startup processes to settle.
2. Open the Start menu, trigger the Windows Search bar, and open the Action Center.

If Low Latency Profile is active, you should notice the following:

• Smoother and faster Start menu interactions.
• Enhanced responsiveness in Windows Search.
• Fluid transitions in the Action Center.

On higher-performance systems, the improvements may feel subtle but contribute to an overall smoother user experience.

Low Latency Profile: Performance Varies by System

When testing Low Latency Profile on a low-powered virtual machine running Insider builds, the results were dramatic. Task Manager showed noticeable CPU spikes during interactions with system layers, and app launches (e.g., Edge and Microsoft Store) exhibited higher CPU utilization for 1–2 seconds.

On more powerful systems, the improvements are less about raw speed and more about smoother interface transitions. Even so, many users report their systems feeling more premium and refined after enabling the feature.

Why Low Latency Profile Matters

Despite criticism from some users, hardware-level CPU boosting is a standard industry practice aimed at enhancing UI responsiveness. Windows 11 often feels slower than older operating systems like Windows 7 due to the complexity of its web-based shell elements. Features like Low Latency Profile are an important step toward addressing these issues.

While the feature is not a cure-all, it offers measurable improvements in certain scenarios. Microsoft’s ongoing commitment to rewriting core elements of the Windows shell using lightweight, native code will determine the long-term success of such optimizations.

For now, Low Latency Profile is a promising feature that enhances the responsiveness of Windows 11, particularly for users with mid-range or low-powered devices.