I have to try that too. I have no idea what bucket size means. I have to admit, I usually render using the Poser 4 renderer until I am ready to do what I hope is a final picture. Then I start the render in Firefly, turn the monitor off, and go to bed. I know that's not really a practical strategy, but Poser usually does finish rendering the picture at some time during the night without my help, and seems to do better if I'm not trying to do other things on the computer at the same time (this has always been a problem for me with Firefly; it's not new with the patch).