I'm using Vue 10.5 Infinite, and was doing some GR renders (an animation), and decided to try out Re-use Indirect Lighting.  I know this will NOT be used when creating the animation, but I thought I would try it out to speed up individual frame renders when setting things up.

However, what is really bizzare is, turning on this option actually increased render time dramatically (6 TIMES or MORE!) and it added a bunch of noise/grain.  (see the images below)

NOT Using Re-use IDL (render time: 1' 15")

 

WITH RE-USE IDL ON** ** (render time: 6' 21" !!)

Notice how grainy and ugly the second picture is, and how long it took to render.  (The rendered animation of the first setting is devoid of any noise (other than shadow softness).  I can only imagine what would be produced if I had this option turned-on ... unless Vue automatically turns it off when you render an animation.

Any idea why this is happening??  I'll continue with further observations in my next post.

 

-Tim