This can be caused by trying to get poser to do too many complex things in one render. for example, if you are using Face Off's skin shader system, it is a very complex and computer intensive material with lots of calculations etc. To fix problems caused by materials at render time, increase the shading rate (the default shading rate applied to all objects is 0.2, so if you change your shading rate to a higher amount, make sure that it is over the 0.2 mark. go up .1 at a time (aslong as your render doesnt take hours, if this is the case, jump straight to 0.5 or 1) Also, your texture sizes could be a problem when combined with complex/semi-complex materials. try reducing the max texture size, or alternatively, to get the best image, manually resize the textures used within your scene to a smaller size. texture filtering can also cause extra system usage. smooth polygon option adds extra polygons within smoothing groups of the object, increasing the objects complexity. depending on the image you are making, try turning this off. like above, the displace mapping option GREATLY increases the models complexity to model the bump map instead of using lighting to create the bump mapping. I hope some of this information helps you out.

TemplarGFX
3D Hobbyist since 1996
I use poser native units

167 Car Materials for Poser