There was a time that designing was simply feeling the pencil's graphite against the paper.
Excerpt from somewhere on the internet:
"I work with heavy Rhino models a lot. I've noticed no significant slow
down- I guess it depends how you bring it into Max though. After a lot
of testing different formats etc, I use a Rhinoscript to export each
layer as an obj file (highest geometry settings). I use a Maxscript to
batch import all these into Max because I find it works best with
"import as single mesh" ticked. Add an Edit Mesh and Auto Edge
Visibility everything, add a Map Scaler OSM modifier set to 1m and it's
all good to go. There's a couple of extra steps I do, but that's the
basics, works great."