150Mb single object, tooooooo large
Besides that it has some issues, object smoothing is not defined,
resulting with visual “sparks of reflections” artifacts. geometry holes, e,t,c.
The model requires processing in some modern 3d software like Max or Blender before Co-Spacing,
have correct smoothing defined, and simplified when possible.
Then it might be around 200-300k (now it has 4.3 millions of vertices) that might be reasonable.
Here it is (original): CoSpaces Edu :: CoSpace