Since Avast Antivirus performs tasks such as background scanning, virus removal, real-time scanning, and cleaning, it consumes most of your CPU resources. Method #9: Remove Unnecessary Avast Plugins.Method #8: Disable Update Notifications.Method #3: Update the Antivirus to the Latest Version.Fix: Avast Behavior Shield High CPU Usage.Steps to Permanently Deactivate Avast Behavior Shield.Why Does Avast Service Use a Lot of CPU?.
