Here is what I have, maybe it helps, maybe it does not. If you go to the 8 minute mark and roll film you will see several stutters around the 8:30 to 9 minute mark.
I see the micro stutters but they do not show on film. IF, I am understanding "micro stutters" I see them as when rolling along and watching the ground terrain directly near to me, it is as if the terrain repeatedly hesitates, then moves again. I liken it to watching a ceiling fan, it spins and it's a blurr, but for a split second you concentrate on one blade, and you clearly see that blade, blink, and it a blurr again.
I tried to change numerous thing, but they were always there. My FPS stayed steady while filming. I was at a remote base, so I'm kind of the opinion what I am seeing is not voice related.
Hope you find something you can use