Check them go pro settings mate. That set up has terrible light handling when looking at the sky then back to the ground. I thought at first you were running a run cam split until I looked. That is how their default settings look when transitioning from bright to dark since they STILL use the stock indoor settings...
Soo many things to fly around out there. Im gonna bet you can get some great rips out there and that huge barn is GOLD for winter flying.