Thanks for responding. My meshes use quads, which firefly seems to hate. The Poser 4 render engine in Poser 6 had no issues with it, so is it just Firefly then?

It also seems to relate to scale as well. Like I posted, if I scale the whole scene down to 10% or 5% of normal figure size, it greatly minimizes this effect, and when dealing with large objects it is exaggerated. Is there a way of "tricking" Poser into thinking everything is at reduced scale. This and increasing the camera scale are the only ways I know to fight this.