Revit Toposolids should not be converted to Breps

Toposolids should stay as meshes, they seem to completely slow down my model especially in render view, near impossible to load. of course I can convert the revit element into a mesh then re add the material. but I think the default should be mesh.

It was all easier with topography, before toposolids.

Toposolid generated with points and curves is a nightmare compared with topography generated from a mesh

From what I understand, toposurface is no longer available after Revit 2023 version.

Did the toposurface transfer as a mesh to Rhino without conversion if Revit v2023 or earlier was used?