Tweak your Registry Editor to stop the system from disabling Bluetooth connections.
Click on the Search icon and type Registry Editor.
Double-click on the Registry Editor to launch the app.
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_8087&PID_0026\5&2ce2e494&0&10\Device Parameters
Then, add the following entries （New → DWORD 32-bit Value）,set value to 0
https://www.heyzhen.com/%E4%BF%AE%E5%A4%8D%E8%93%9D%E7%89%99%E9%BC%A0%E6%A0%87%E5%9C%A8windows10%E9%A2%91%E7%B9%81%E5%8D%A1%E9%A1%BF/
换了新笔记本之后发现用蓝牙连接罗技鼠标的时候，基本上每分钟都会出现鼠标1-2秒的卡顿，切换成自带的wifi发射器之后则没有这个问题，所以应该是windows蓝牙出了问题，找到了一个解决方案，就是在注册表禁用蓝牙的频繁自动搜索之类的，应该是这个功能造成的延时。
Prevent the System from Disabling Bluetooth
Tweak your Registry Editor to stop the system from disabling Bluetooth connections.
Click on the Search icon and type Registry Editor. Double-click on the Registry Editor to launch the app. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_8087&PID_0026\5&2ce2e494&0&10\Device Parameters Then, add the following entries （New → DWORD 32-bit Value）,set value to 0
Reboot laptop