Spark erratic behaviour

Hey all! My spark decided to hop up and down when landing (auto and manual) and it’s very hard to land in this condition. Props brand new and original DJI, latest firmware for AC and RC (also downgraded to .0900, still the same). Also, the motors ran erratically yesterday, fluctuating at idle speed. I already checked for interferences and I’m good.
Here is my log from today. Thanks a lot and merry Christmas!

It looks like the downward sensors are not functioning properly. Even when your Spark was close to the ground, the sensors were not detecting the ground.