Artifacts in renders...

[evanerichards]

I'm getting these artifacts in my render and I can't for the life of me figure out why they are happening and how to get rid of them.
Check the picture below to see what I am talking. It happens in basically the same area every time regardless of camera orientation or lighting. The geometry is a simple cylinder.

Light Subdivisions = 32
Reflection subdivisions = 64
Adaptive DMC Subdivisions Max anywhere from 8 - 64 makes no difference
No GI



Whats going on here?
Please advise.

Thanks!!

[MoonDoggie]

Can you render out some render elements so we can see where the noise might be coming from? VRayLighting, VRayReflection, VRaySamplerRate, might help here.

[evanerichards]

I did it already and the noise is coming from the reflection. I'm not using any reflection glossiness though. I'll post them in a minute.

[Zdravko]

Could you please attach a scene or send it to support@chaosgroup.com ?

[evanerichards]

You know what? After messing with render settings for several hours I finally found the reason. Someone else had created the model and it had double faces. Faces under faces. And it was creating artifacts. Once I deleted the lamina faces everything rendered fine.
That's what comes from trying to save time by using someone else's model. Ha.

Thanks for the help.