Next, right-click on the newly-created Scan subkey and select New -> DWORD (32-bit) Value.Right-click on the “ Windows Defender” key and select New -> Key. Open Registry Editor and navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender.
Method 3: Limit Windows Defender CPU Usage via Registry Editor Restart your computer to apply the changes.Select the Enabled option and you limit the CPU usage of Windows Defender to 30% or any percentage you like, Click Apply and then OK.On the right pane, double-click on the “ Specify the maximum percentage of CPU utilization during a scan” policy. Open the Local Group Policy Editor and browse to: Computer Configuration -> Administrative Templates -> Windows Components -> Microsoft Defender Antivirus -> Scan.Method 2: Limit Windows Defender CPU Usage via Group Policy Set-MpPreference -ScanAvgCPULoadFactor 30 Windows Defender will not use up more than 30% of your CPU. When you need to reduce CPU usage, type the following command and hit Enter.
Get-MpPreference | select ScanAvgCPULoadFactor It will display the current maximum CPU usage limit for Windows Defender.
To prevent Windows Defender from using the CPU too much, you can use the following methods to limit Windows Defender CPU usage in Windows 10. So it’s safe to say, Microsoft has a lot more upping to do.Windows Defender service is using high CPU all the time? If you have real-time protection enabled, Windows Defender will do the scan in the background and this can cause high CPU usage. In August, Microsoft also acknowledged new wormable vulnerabilities in every version of Windows 10 and not one, but two Steam exploits were able to compromise Windows security. In April, Microsoft promised to up its game but last month alone we’ve seen Windupdates run aground and updates break Bluetooth connections. The good news is industrious Windows users have found a workaround but, as one affected user noted, the larger problem is Microsoft's “ Goddamn garbage quality control. For a bug which can consume almost half your PC’s CPU and waste a good chunk of battery life, that’s an odd decision to make. Now the bug is in the wild, Microsoft has only told Twitter users about it. Windows Insiders complained about CPU performance with the KB4512941 update during beta testing but.
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