Windows 10: Windows Defender CPU Usage

Is there a way to forcefully reduce Defender's CPU usage? Now it is managing to slow down even one of my best computers, an Asus sporting a Ryzen 7 4800H. On an old laptop with a Haswell i5 also running Win10, I've always kept Defender disabled as it just makes the system run like a snail. I could disable it on the newer PC, but I'd rather leave it enabled.This is getting ridiculous. Task manager was showing it using 90% of the Ryzen CPU at startup and for a while after until I went into Virus & Threat Protection and turned it off. Excessive. The Asus computer runs Win10 Home 22h2, fully u

:)

 

How to reduce Windows Defender and Google Chrome CPU Usage to the minimum?

Hi.

My PC runs slow.

When I click on Task Manager, I always see a High CPU usage from Windows Defender and Google Chrome.

Any suggestion to reduce Windows Defender and Google Chrome CPU Usage to the minimum?

Thanks

Francesco

 

Windows Defender 100% CPU Usage when doing full scan

The ProcMon log indicates no triggering processes. As a workaround, please do this:

Create a scheduled task for a full scan, instead of running it manually.

Enable these two settings:

• ScanAvgCPULoadFactor
  
• EnableLowCpuPriority
  

Reference: Set-MpPreference (Defender) | Microsoft Learn

See how much CPU usage happens when the scheduled scan is run. Per the documentation, scheduled scans shouldn't take much CPU usage.

 

Windows Defender CPU Usage

Hi,

Windows Security Essentials and Windows Defender are different programs that has different settings. On Windows Defender, you cannot limit its CPU usage during scanning.

Please check this
link for more information about Windows Defender.

Thank you.