Just tested this and I have the same issue when recording handheld. I do not experience this when recording while in flight. This is a bit of a bummer; I was thinking of getting something like this: Pardon Our Interruption...
but that seems...
I could be wrong but I imagine that many people buy a drone with the insurance, fly it for a month or two, and then it sits on a shelf the next few years.
That's a good point, the 1 second timed shots available on the 512gb and not the 64gb could indicate faster write speeds which could make this issue less annoying.