Actually on Poser Pro 2010 I had a render hang and then I checked the texture size for a clothing item which was 8000x8000.  By reducing that to 50% I was able to finish my render.   It was the medieval dynamic dress from DAZ and I was suprised to see such a huge texture for what was a fill with just a trim at the bottom!  I could probably have gone even lower to 2000x2000.