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#11
Thats the idle time scan. You can disable it or change its frequency.
Go to Task Scheduler, Task Scheduler Library - Microsoft - Microsoft Antimalware
Select MPIdleTask, right click, select properties
In the Conditions tab, click on the dropdown and change to whatever you want.
Otherwise, just delete the task, if you dont want it running at all. Suggest you leave it enabled and change the condition so that it runs only when the computer has been idle for one hour or 2 hours.