Go to Startup TAB and uncheck WindowsDefender displayed at Startup Item.
去启动选项卡，并取消勾选Windows Defender的显示在启动项目。
2
You can also disable Windows Search and WindowsDefender services, which can take up system resources.
你也可以禁用 Windows 搜索和 Windows 保护服务，这些都占用系统资源。
3
If, and only if, you use a third-party anti-virus program that is also anti-malware (the best ones are), you can also disable the WindowsDefender service.