Sounds like your compass didn't match the direction the drone was facing at takeoff..if so, magnetic interference. Did you calibrate the compass before flight and/or takeoff in proximity of metal, rebar, vehicles, etc.? Upon liftoff the drone...
I very much enjoyed your collection of timelapses, day to night and night to day, as well as close ups. We are very similar in our outlook of photography which is producing a multi media presentation of still images, using DJI Action 5...
About the lag you're getting, appears that FLY is fighting for power used by other apps running on your device. Should improve by shutting down other power intensive apps running in background during your fights.