I am using VOICE METER Banana 2.0.4.7, because I use a bluetooth headset, an usb headest and speakers. So I am able to listen through all devices at the same time.
However, if my bluetooth headset is not activated at beginning, I sometimes observed a permanently CPU usage of ~20%:

If I remove the selected bluetooth device in A2 (because headset is inactive), then CPU goes fine:

Any idea?
Best regards,
eusi