I am new to Unreal 4. I imported a height map from World Machine and built splines to form roads. I used the “Deform Landscape to Splines” tool to level road with landscape. But after deforming I see ugly artifacts or smoothing problems under the road spline. When I try to use the Flatten tool under Sculpt, the flattening applied to whole region, which results in uglier artifacts. I’m posting below:
So, what is the best way the smooth the artifacts under the road? Or why can’t I just smooth where I want?