Quote - The only other thing that I can see would be how the lights are currently being written out. At the moment, they are all given the same name of default which seems to give visual errors on how the polygons of figures are rendered. I guess I'm trying to say that most of them appear to be massive black blocks instead of smooth shadows; but, if you give them all separate names like Light 1, Light 2, and etc the shadows render smoothly. Though, technically, that might be a problem with how Lux itself interprets the lights from the exporter.

I would redo the same pic with a Poser high-res sphere and the same lights, just to make sure which part is due to mesh and which part is due to lights.

There is already a thread in the LuxRender forum user support section about a bug causing blocky shadows. Not saying your problem is due to the same bug (the bug appears no matter what the lights are named), but in case, since the Lux devs are trying to fix it, adding whatever additional additional insight we might have can only help them to pinpoint it.