When I first played back a video from my M4 Pro, it was with a video player and it was also choppy. I then loaded it into Premier Pro and CapCut where it played smoothly on both. Not an expert, but it may be the players your using can't handle...
You may be getting false indications of nearby objects caused by sunlight striking the lens of the camera. Next time it happens, rotate the drone 90 degrees and see if the problem persists.