false reading

When my mavic air is sitting on the ground, as soon as it connects to gps, the go4 app says it is moving even when it is sittung on the floor. I have recalibrated imu and compass but it still does it. I did a test fly yesterday and it flies fine. Hovers on spot very well. It only seems to do it...

could someone please help by looking at the screen recording, where the Mavic has already landed, but Litchi reading was lagging way behind still showing 147m altitude. The readings continues to catch up, while Video record / stop button is unresponsive until nearly a minute later. I have...