I guess it all depends on what you're callin a flutter. The bestest thing to do would be to upload a video with the BEST POSSIBLE audio you could get. Then we might get somewhere.
It is subtle enough that I doubt a video will show it. It is almost like a cylinder is cross firing a bit.
It could be reversion from the cam that I will having to live with but the cam is not that big. Or I am just expecting too much.