I only know that during the RT rendering phase, everything on my computer (and I mean every thing!) comes to an absolute halt. Even switching to desktop, let alone another app, takes until the rendering is at least 75% into it.
And that's on Mac OS X where such a phenomenon just should not happen at all smirk


Just because you can, doesn't mean you should!
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BBox 2022 Audiophile, Mac Pro Intel, OSX 10.6.8, 800x600 (TV VGA)