Throttle slowly decreases after ground contact

Hi all,
I have a quadcopter with Pixhawk4 and PX4 with a landing issue.
When I land, after the drone touches the ground the throttle decreases very slowly before going to MPC_THR_MIN (default 12%). In case of a gust of wind the drone can tilt and damage props.
Below the flight log:
Is there any parameter to improve this behaviour?