Antimalware Service Executable will now be added on the Exclusion list of Windows Defender then check if Antimalware Service Executable High CPU usage issue still occurs.

The Antimalware Service Executable is a program that runs in the background on your Windows 10/11 PC to protect the computer from viruses and other threats. Sometimes it starts to consume too much ...

The Antimalware Service Executable is a background process of Windows Defender, responsible for real-time scanning of files, programs, and downloads to ensure your system remains secure.