Your shutterspeed 50 is in my view very low. I would suggest in windy condition not to go lower than than 160. Sweetspot f is 5.6 an try try not to exceed 400 iso
Did the buyer have the x5 with lens attached to the inspire while starting up?
Must do....
Secondly do an imu calibration.
Hopefully This does the trick
In your workflow you try to set your iso to 100.
In my I2 premium combo X5s With cinemadng and prores DJI sets Iso to 500. No changes possible. Clever because it secures lowest noise. High lighting should be managed through HD filters. You could ck of 500 gives better noise ratio.