LOD character derivatives, mainly Victoria, were created by DAZ around v6/7. However, it looks like the newer figures do not have premade LOD .obj files and the resources for the old Victoria series are no longer available on the DAZ site.

You can make them yourself if you are inclined, saving each .obj file to a new file (Important!) by decimating the polygons progressivley for each version.

Also, the DAZ Studio4 is set up to do this already. 

So, the bottom line for LOD is that it doesn't appear to be simply click-and-play solution at this time. 

Mark