Microsoft Edge's Startup Boost feature is designed to make the browser launch faster by keeping background processes running even after you close it. While this creates a snappier user experience, it comes with a hidden cost: continuous memory and CPU consumption in the background. It will be around 300MB to 1GB depending on system resources.
For users with limited RAM, older devices, or anyone seeking maximum system performance, Startup Boost can be counterproductive. It quietly drains hundreds of megabytes of RAM, slows down other applications, and reduces battery life on laptops. If you've noticed your Windows 11 PC feeling sluggish or your battery draining faster than usual, disabling this feature could make a noticeable difference.
How Startup Boost Affects Your System Performance
In Microsoft Edge, Startup Boost works by maintaining background processes that prepare Edge for quick launches. However, this convenience comes with trade-offs:
- Memory Drain: Hundreds of megabytes of RAM consumed continuously
- Background Extension Loading: Extensions and apps run even when the browser is closed
- Battery Drain: Particularly noticeable on laptops and portable devices
- System Slowdowns: Reduced performance for other applications competing for resources
Step-by-Step Guide to Disable Startup Boost
Follow these simple steps to turn off Startup Boost and reclaim your system resources:
1. Open Microsoft Edge on your Windows 11 device.
2. Access the Settings menu by clicking the three-dot icon (⋯) in the top-right corner.
3. Select "Settings" from the dropdown menu.
4. Navigate to System and performance in the left sidebar.
5. Click "System settings" to expand additional options.
6. Disable the Startup boost toggle by clicking the switch to turn it off.
7. Turn off "Continue running background extensions and apps when Edge is closed" — this secondary toggle prevents Edge extensions from running in the background after you close the browser.
8. Restart your computer to apply the changes and ensure all background processes are fully terminated.
What to Expect After Disabling Startup Boost
Once you've completed these steps, you'll notice:
- Immediate RAM Savings: Depending on your system configuration, you'll free up 100–800+ MB of memory
- Improved System Responsiveness: Other applications will have more resources available
- Better Battery Life: Particularly noticeable on Windows 11 laptops
- Slightly Longer Edge Launch Times: The first launch after disabling Startup Boost will be marginally slower, but subsequent launches will remain normal
The performance gains scale with your total installed RAM — users with 8 GB or less will see the most significant improvements.
Is Disabling Startup Boost Right for You?
Disable Startup Boost if you have:
- A system with 8 GB of RAM or less
- An older or budget laptop
- Heavy multitasking workflows
- Concerns about battery efficiency
Keep Startup Boost enabled if you:
- Have 16 GB+ of RAM with plenty to spare
- Rarely close Microsoft Edge
- Prioritize launch speed over background resource usage
Conclusion
Disabling Microsoft Edge Startup Boost on Windows 11 is a quick, reversible tweak that can significantly improve system performance and battery life. If your device feels sluggish or you want to optimize every bit of available RAM, follow the steps above to turn off this feature. You'll notice the difference immediately, and the modest increase in Edge's initial launch time is a worthwhile trade-off for a faster, more responsive computer overall.
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