In Revit, Toposurfaces are Mesh elements. By definition, a mesh contains points, edges, and faces. Topos are always more manageable to edit when they have fewer points and edges, but all of those edges can also make them appear unrealistic.

There are a variety of methods you can use to smooth out those edges, but one of the quickest ways to do this is to convert the Topo into a Nurbs Surfaces (in Dynamo, of course).

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