HI Michael,

Putting together a file for visual 3d pdf presentation - the file is 560meg - 2600 parts.
Moiv3 File takes 1.34 minutes to open
Moiv4 File takes 5.06 minutes to open
Rhino5 takes 0.50 minutes to open

I can organise for a shared link to file to run a load test - what do you think causes the wide variation in file handling time.
thanks
Alex.