So I've created a few displacements which I am using for blending concrete and grass textures, but I am getting really ugly and dark shadows at the edges. I figure it's an issue with the lightmaps. I try to change the lightmaps for all the displacements (some are 28, some 20, others 18), but when I try to change them all to 16 they just go back to what they were before. Any help would be appreciated. Thanks.