Trying the new export feature, it crashes my game consistently. I have a lot of people in four settlements, so that may be why. Graphical mods don't seem to influence the crashes. Panning through all the settlements seemed to help, as the game took longer to crash, so I suspect it's a matter of the world being too big. My settlements have overlapping influence radii, I don't know if it changes anything.
Edit: I highly doubt it has an influence, but my world is called Eror the Plane of Chopping, not the most encouraging of names...