Using Zbrush, I retopologized in Zremesh from over a million to 600K tris and projected all the texture maps from high-poly to low-poly. This gave me the opportunity to load the models into ACCURIG and create a skeleton for them
When rendering in the Movie Render Queue, I encountered strange artifacts in the shadows and flickering during ray tracing
After reading many forums, I found a solution to the problem using these commands for the console variable