Microsoft Defender causing high CPU usage after latest Windows update?

Question

After the latest Windows update, Microsoft Defender seems to use unusually high CPU resources in the background. I noticed the issue mostly during scans and while opening multiple Microsoft 365 applications.

I’ve checked

• Windows Security settings
• startup processes
• scheduled scans
• background apps

Still looking for a stable solution without disabling security features completely.

Has anyone else experienced this issue recently on Windows 11?

Thanks in advance.

ธนมน โสภณธนวัฒน์