Hi there. Thank you for reaching out and we're sorry for the trouble that this has caused. Can you please download the DJI Assistant 2 software and kindly please calibrate the sensor of the unit to see if the issue persists? You may refer to the link below for the download site also I will be posting a tutorial for the calibration of the DJI Mavic Air vision sensor and it is more likely the same with the DJI Spark. Please keep us posted. Thank you.