Each point in a toposurface creates triangulated geometry, which adds to the computational overhead. When a toposurface is created using a large number of points, you can simplify the surface to improve system performance. When a toposurface is simplified, the accuracy and geometry of the contours may be affected depending on the specific conditions of the toposurface. After a toposurface has been simplified, verify the contours and geometry. Add points for accuracy if needed.