Is there a liquid in that Glass, for example the "Clear Natural Water" from the DB ?
What rendering mode did you use ?
Exit portals ?
In general these artifacts tend to show up when small light sources are used in conjunction with glass and water. That's the reason that there are none of these "specs" in that flat lighted 2nd picture.
Increase the super sampling factor, change the rendering mode (perhaps one of the MLT modes in conjunction with water and glass) and let it cook longer even though 70h sounds rather long!
Originally I had water inside...but then removed it because it wasn't giving me the effect I was looking for. I am using Reinhard and Bi-directional PT.
What exactly are exit portals? All I know is that they are used in conjunction of where you want light to pass through. But where do you define these? Is that in Sketchup or in Indigo? I am using the thin glass material on the windows.
I will give those other suggestions a try. Can you help me understand exit portals a little better? I see people talking about them alot on here but not much detail as to what they do or how you set them. Thanks!