Yep, the import is slow. I know and I haven't done much optimizing in the code. The Route I'm going is

  1. No Tool
  2. A Tool
  3. A fast Tool

And I'm currently working on 2.

— From

A spin on the “Make it work. Make it right. Make it fast” adage but I enjoyed seeing it in the wild. I feel like I'm almost always working on step 2.