The condition of bluetooth has been bad since the other day.
Looking at the device manager, the bluetooth item seems to be a problem, and the device screen is updated frequently.
Disabling the bluetooth device will stop frequent updates.
Uninstalling the device and rebooting did not improve the symptom.
Is it a physical failure of the Wifi / Bluetooth module?
Was self resolved.
I installed the latest driver for Bluetooth on the official Intel website and it was cured.
The driver version is 20.100.10.3.