Shading artifacts in cycles displacement I'm trying to make stylized topographic maps in cycles using displacement with 10m resolution hight maps. An early issue I have is getting clean edges. Adding more geometry to the plane does not seem to help. I suspect my image may be too low resolution, but that's the best I can find. Does anyone have a workaround suggestion to clean this up a bit? Many thanks.
A couple of things come to my mind:

If it's really the image that's the problem, upscale and blur it beforehand. This will smooth any compression/resolution artifacts and could work in your case.
Are you using Adaptive Subdivision? If not, you might want to do
that. Go to Render Properties &gt; Feature Set &gt; Experimental. Then add
a Subdivision Surface modifier set to Simple and check Adaptive
Subdivision. In viewport you won't see the full resolution though. Also, make sure to use Displacement Only. Material Settings &gt; Settings &gt; Surface &gt; Displacement &gt;Displacement Only.
Try different interpolations in the Image Texture node.