The second is the Full Scan feature, which can scan all files when the computer wakes up from sleep or when it is connected to the network, as well as when it is scheduled to run every day. The two most common causes of high CPU load are the real-time feature that constantly scans files, connections, and other related applications in real-time, which is what it is supposed to do (Protect In Real Time). What are the causes of high CPU load with Antimalware Service Executable? Can you remove the Anti-Malware Service executable file?.Why is the Antimalware Service executable file so busy?.How do I prevent the antimalware service from running?.How can I prevent the antimalware service from using a large amount of memory?.Add the Antimalware Service executable file to the Windows Defender exceptions list.Change Windows Defender runtime scheduling settings.