Grasshopper Extrude very slow (29s), how do i make it more efficient?

Title. I am trying to extrude a bunch of large, complex geometries. I think the way I am creating the geometry might not be the most efficient. Can anyone help me make it simpler? (35.5 KB)

please open you grasshopper file, right click on the “Curve” and “Surface” parameters and chose “internalise data” from the menu, save the GH file and reupload :+1: