Deleting many objects takes too long

Rhino Rhino for Windows
1

I just had a layer with some 30000 assorted points, curves, surface and meshes. I wanted to get rid of them, because they were no longer relevant.

Strategy 1:

  1. set layer visible (yellow light) (takes more than 1 minute)
  2. select objects in layer
  3. delete (I had to kill rhino after 10 minutes at full CPU, this takes too long)

Strategy 2:

  1. set layer invisible (blue light)
  2. delete layer (takes a couple of seconds).

Why is there such a difference in time to delete large number of objects?

2

Is it possible to see the file that is giving you grief? Feel free to email it to me directly if needed (dale@mcneel.com).

– Dale