I’ve had the same issue when using the method of exporting and importing the heightmap.
Would love to know if anyone found a workaround. Working directly with a large landscape is barely manageable on my PC, constantly out of memory. The method used in Project titan is the best I’ve seen so far without use of external tools.
Trying to fix this with Landscape tools has been an issue, for example smoothing doesn’t seem to work on this:
Noticed that the issue originates in the Landscape Design map itself.
So far the ‘workaround’ is to place splatmaps where the issues are, then just flatten them. Not perfect, but works without major issues.
