Nanite with Geometry Collection?

I’ve create a Geometry Collection. In going into Geometry Collection Asset itself, I find some Nanite properties:
Nanite

  1. Does “Enable Nanite” WORK with this? All I see when I check that Nanite box inside of the Geometry Collection is THIS back in the editor (when I have said Geometry Collection selected)

  1. There seems to be NO performance savings with “Enable Nanite” checked on? I’ve exploded my Geometry Collection wall numerous times with “Enable Nanite” ON and again when OFF. In either case, my frame rate stayed pretty much the same.