I had a problem with my Bluetooth mouse where it would the device would have a tiny half second lag when moving it after sitting still for about 10 seconds. It took me a lot of on and off troubleshooting before I found out that Windows was putting the Bluetooth driver itself into sleep mode. Don’t ask me why Microsoft decided the default of that a Bluetooth driver needed to be put to sleep while plugged… But I’m sure those milliamps of power really improved performance /s