OK, here's one thing which slows down freebie production:  finding that about one out of three objects imported into the UV unwrap program show reversed normals, seam breaks, etc. 

     Having to go back into the modeler and fix mistakes, then back again to the UV unwrap.

     Here is a the state of reconstruction where I'm re-importing the UV'ed parts, assigning mat zones, arraying and mirroring pieces, etc.  The tree is noticeable by its absence.  It's still in the workshop.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5