Mesh3d boundary render artifacts

Hello all. this has sortof been mentioned before, but with no answers…so I’m asking again :wink:

creating a 3d Mesh from x,y,z and there are artifacts being rendered on the outside/boundary of the mesh, that look like “walls” or straight line boundaries connecting some of the triangle vertices? are there parameters to adjust for this? the rest of the render looks fine, but there are issues around the outside. please see image-