If a post is not answered, it surely must have be missed. It happens, when you have a post count over 25.000...we'll check into this but, before doing anything, what Mesh resolution you use ?
We suggest using either 5 or 10 meters resolution and, anything higher, will not result in any increase of quality and terrain artifacts which can cause such problems, due to oversampling and rounding error of the mesh data.
Mesh complexity, instead, should always stay at 100%