Altitude hold\loiter problems altitude on pixhawk 3.4.6

Hello friends, I have a problem with the retention of height in the first minutes of the flight.
Then everything works stably. Tell me why this problem may be? On what settings should I pay attention?
My log

I removed buzzer from pixhawk and everything became normal. Thanks to all


Glad to hear you found it - but I’d be interested to understand the connection.

Was the buzzer sounding while you had the instability issues?


Yes, logs are well seen when the signal from the buzzer comes, strong vibration on the Z axis, because of this the Kalman filter does not immediately make the correct decision about the altitude.