'Secret' uber-Xeon tip (on a Z600 2x X5670, 24Gb RAM): Poser Firefly loves the max. settings and does best on them. Go to Render Settings, auto, set to Max + quality. Switch to Manual and inherit Auto settings. Set bucket size to a massive 512, and nudge the samples down from 6 to 4. Watch in awe as a 1800 pixel render is done in five seconds. 512 seems to be the 'sweet spot'.

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Learn the Secrets of Poser 11 and Line-art Filters.