ODB++ Import is very slow. How can I speed it up?

To improve ODB++ import times by up to 20X, please perform the following:

1. Go to ACE menu:  Setup / Preferences...
   
2. Select tab "Misc"
   
3. Check the option "Optimize Polygons during Import"  (see screen capture below).
   
4. Press OK, to save settings change.
   

Now import your ODB++ and it should be much faster.  Here's a screen capture of the Preferences dialog.