What setting is this??

[glenpittock]

Hey Guys,

 

I know this is a stupid question, but it has been a while since I have played around in V-ray. I know there is a setting, possibly with Irradiance map this counters these artifacts, but I can't for the life of me remember nor find what it is?

 

The setup is HDRI sky with V-ray sun. All other parts of the render are fine, but the sections of the interior where the light struggles to find it's way in seem to suffer.

 

If anyone could point me in the right direction, I would be most appreciative.

 

Thank you kindly