Thank you Iam2. The figure is Maddie, and I am using one of the "Children of our time" textures from DAZ on her. I am going to try and export large scenes in sections to try and avoid this problem. Exporting figures via Collada seems worth trying.

Poser 11 Pro, Windows 10

Auxiliary Apps: Blender 2.79, Vue Complete 2016, Genetica 4 Pro, Gliftex 11 Pro, CorelDraw Suite X6, Comic Life 2, Project Dogwaffle Howler 8, Stitch Witch