Noiseproblem VraySun interiorrender

[torstenmiddelkoop]

Hello!

 

I have a problem concerning the noise coming from the vray sun. It is a very simple scene lit bij a VraySun and sky. I use skylightportals (8 in total to cover the holes in the wall) as well. I just can't seem to get rid of the noise. If I raise the subdivs of the skylight portals and the VraySun subdivs to 64 (in the attachment 24 subdivs) there is no improvement. Lowering the Colorthresheld or Noisethreshold also does not help that much, there still is noise. What do I miss? All of the passes are clean from noise, except the VrayLighting pass from the Vraysun. Hopefully someone can help me with some insight. I attached my settings and regionrender

 

PS (I switched off divide shading unit hence the maybe low subdivs)

 

 

 

Thanks!

[jasonstewart]

It looks like the skylight portals are intersecting geometry...If they are that is probably your problem.

[Chris MacDonald]

Use the render elements to determine where the noise is coming from first, then you can better tune your render settings to deal with it. The most common issues are lighting/GI/reflection

[torstenmiddelkoop]

Thanks for the replies,

 

I found where the problem is coming from. I used 7 instanced skyportals next to each other. This setup gives the noise in the lighting pass. If I use one large skyportal to cover all the openings next to each other, the noise is gone.

[jasonstewart]

Is proballistic lights turned on? That may cause issues with a lot of lights, I think portals would be the same.