There is a free script set for Daz Studio which works with the $50 Atangeo Balancer as your polygon decimator. This offers a streamlined script-assisted workflow to take a posed and dressed Genesis, poly-reduced, to obj. From there, into Vue and it should be light enough not to bog down the scene (even though it's Genesis). Not for close-ups obviously.

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