What is Windows K2?
Windows K2 is Microsoft's internal codename for a plan to address long-standing performance pain points in Windows 11. As part of this initiative, Microsoft is testing a hidden feature called the Low Latency Profile in the Windows 11 Insider Preview (Experimental Channel).
The Low Latency Profile temporarily spikes your CPU to its maximum frequency for short bursts to speed up:
- App launches — up to ~40% faster
- Windows features (Start Menu, context menus, etc.) — up to ~70% faster
Prerequisites
- Windows 11 Insider Preview — Experimental Channel, version 26H2 or newer
- Administrator access
- ViveTool v0.3.4 — a third-party tool for enabling hidden Windows features
⚠️ Disclaimer: This enables an experimental feature that Microsoft hasn't officially released. Use at your own risk. The Low Latency Profile may cause slightly higher CPU temperatures and reduced battery life on laptops.
Step 1: Download ViveTool
Download ViveTool v0.3.4 from the official GitHub releases page:
👉 https://github.com/thebookisclosed/ViVe/releases
Choose the right version for your CPU:
- ViVeTool-v0.3.4-IntelAmd.zip — for Intel/AMD (x86/x64)
- ViVeTool-v0.3.4-SnapdragonArm64.zip — for Snapdragon/ARM64
Step 2: Extract ViveTool
Extract the downloaded zip to a folder. For example, you can extract it to your temp directory or any folder of your choice:
C:\ViveTool\
Step 3: Enable the Low Latency Profile
Open PowerShell or Command Prompt as Administrator, then run the following commands:
Enable Low Latency Profile
& "C:\ViveTool\ViVeTool.exe" /enable /id:60716524
Enable Low Latency Profile for Application Launch
& "C:\ViveTool\ViVeTool.exe" /enable /id:61391826
Or combine both in one command:
& "C:\ViveTool\ViVeTool.exe" /enable /id:60716524,61391826
You should see:
ViVeTool v0.3.4 - Windows feature configuration tool
Successfully set feature configuration(s)
Step 4: Restart Your PC
Restart your computer for the changes to take effect. After the reboot, the Low Latency Profile will be active.
How to Disable It
If you experience issues or want to revert, run:
& "C:\ViveTool\ViVeTool.exe" /disable /id:60716524,61391826
Then restart your PC again.
What's Happening Under the Hood?
The Low Latency Profile tells Windows to temporarily boost the CPU to its maximum frequency during specific operations like launching apps or opening system UI elements. Instead of the CPU ramping up gradually (which saves power but adds latency), it immediately hits peak performance for a short burst.
This is similar to how gaming laptops use "turbo" modes, but applied surgically to specific Windows operations.
Feature IDs Explained
| Feature ID | Name | Description |
|---|---|---|
60716524 |
LowLatencyProfile | Core low latency mode for Windows operations |
61391826 |
LowLatencyProfileForApplicationLaunch | Specifically optimizes app launch speed |
Trade-offs
✅ Pros:
- Noticeably faster app launches
- Snappier Start Menu, context menus, and system UI
- No software installation required (just a feature flag)
⚠️ Cons:
- Slightly higher CPU temperatures
- Reduced battery life on laptops
- Experimental — may be removed or changed in future builds
Final Thoughts
Windows K2 represents Microsoft's acknowledgment that Windows 11 needs to feel faster. The Low Latency Profile is a clever approach — using short CPU bursts rather than sustained high performance — to make everyday interactions feel more responsive without significant power cost.
If you're on the Insider Experimental Channel, it's definitely worth trying. Just remember to create a system restore point before experimenting with hidden features.
Credit to @phantomofearth for discovering these feature IDs.