Im currently working on a massive project involving LIDAR data. Found a problem with exporting the mesh from ZBrush that i’ve never encountered before. The smoothing looks like the 8bit displacement stepping artefact and is project specific. If i try to decimate it, i get an absolutely nasty grid like staircase effect as well. I’ve tried just about anything - dynameshing, reimporting, zremeshing, etc. At this point im completely desperate. Thanks in advance.
Screenshots (reimported obj, also happens in 3ds max):