1.windefend microsoft defender antivirus service 占cpu
若是专业版请尝试以下方法：
Windows+R后输入“gpedit.msc”>计算机配置-》管理模板-》windows组件-》windows definder防病毒程序》扫描-》双击“指定扫描期间占用CPU最大百分比”--设置指定百分比的值--确定
转载https://answers.microsoft.com/zh-hans/windows/forum/all/windefend-windows-defender-antivirus/b1525adc-a5b4-49b0-93b0-bc45c926562c
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