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.

1. Click on the Search icon and type Registry Editor.
2. Double-click on the Registry Editor to launch the app.
3. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_8087&PID_0026\5&2ce2e494&0&10\Device Parameters
4. Then, add the following entries （New → DWORD 32-bit Value）,set value to 0
   • DeviceSelectiveSuspended
   • SelectiveSuspendEnabled
   • SelectiveSuspendSupported
5. Reboot laptop