Recompile the thing. It needs it. No matter what computer resources you throw at it, it's slow. I know renders take time, but the cloth room? What's it doing calculations with an abacus and a monkey? It needs to use EVERY core and thread you have available. The preview room should do a better job even if it's faked somehow. What you see is not what you get. Some of the tools I've purchased should be part of the program. If you don't make it easier, new adopters will go elsewhere, to Free Daz, Iclone, blender or Unreal. I know you are trying, but I don't want Poser to die.