If I have Bryce5 open, that is on screen, even if I'm not working in it, nothing else works, no tabbing, no other apps, if I minimize the Bryce5 window, I can go ahead and work in other apps, and let Bryce render in the background, but as long as that Bryce workspace is on screen, that's it, Bryce shuts out everything else...as for alt-tabbing, what a pain in the neck that is, it's just easier to minimize Bryce to the task bar and go do things normally ....

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