Green distortion on screen - action camera footage

I've just bought Premiere Elements 22.

In my football videos, the standard camcorder footage is fine (normal), but the Kaiser Baas action camera footage is regularly interrupted by green interference (see screenshots attached or below).

The action camera MP4s are playing fine on my laptop. They're only distorting once in my PE22 timeline (a little bit), and once saved into final video (a lot).

Any ideas why that would be happening, specifically for the action cam footage? Thanks, Rowan.