Vray smudges on some surfaces

#1

I can’t figure out why I am getting smudges on some surfaces when rendering Vray It may have to do with the IR map and DMC sampler settings any suggestions welcome.
Thanks

#2

[b]Let’s help the colleague?

This is a VERY IMPORTANT and excelent question [like a topic].
This is about the center of VRay product’s MAIN RENDER PROBLEM. [/b]
Must heve solutions [into] original concept of the product, exposing nice results, without the use of Farms Services (extreme setups = very long render times).

I think to explore this topic and to place solutions-only results here; The intricated combination of many parts of setups, here and there, to make a great look as result – and fast as possible.

I would like to invoke people who know a lot about this.
I have a few. At the end, works – but after a lot of setups.

To be continued…

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