Windows Defender is really nobody's favorite, especially since it looks like a gray box of oddities and uses a huge amount of CPU capacity. If you get an "antimalware service executable" prompt and don't really care for it like me, you can merely reschedule windows defender to a more suitable time from Task Scheduler in Administrative tools. Or, you can simply turn it off. there are other methods too, and I'm going to leave a link here to a site that lists them instead of typing them all out again.