ok... i loaded Poser 6 with my normal P6 runtime 3.2 gig..fairly small. it took 35 seconds to load...not bad
i created a runtime called startup...i opened it then closed Poser.
Loaded poser...it took 9 seconds to load this small basically 0 runtime.

I too , from experience with multiple runtimes and huge runtimes have extremely sloww loads when I have my huge runtime active. this little test proves it, imo

edited to say...guess what, I'm closing Poser with that o runtime from now on, When I click on my P6 runtime in the library, it opens in a couple of seconds.

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854