Hmmmm.... Dropping to Global Ambience and telling Vue 5 to ignore mapping to the sky layers makes a wee bit of a difference... The 900 frame rendertime was 9hr 33" 17" total. It comes out to a 2.86meg DivX 5 file. I did bump the sunlight up to a visble amount, to throw some shadows on things. The undersides of leaves and clouds look dark; not sure if it is the lightmapping or the map being lit from. The overall effect seems just a touch grainier; but if there were camera motion, I doubt you would notice it.