Difference of file dimension between Rhino Win and Rhino Mac

I’m having a problem with a 3DM file that I saved on Rhino Win first and then opened it on Rhino Mac .
The problem is the considerable increase in the size of the file when I saved in Rhino Mac .

To solve this problem I copied and pasted each object on layer to a new file , reducing the size from 5.76 gb to 211 mb.

( First of all I have to say that I have a layer in the Rhino model with 65,000 surfaces modeled by Grasshopper )

If there’s someone else who had the same problem or someone knows any solution to that, please let me know.

I’m not an expert, But: Is it possible that one file has Grasshopper backed surface and the other do not?

Also more probable is that one contains the render triangles and the other do not.