Need some help with caustics

[AC5L4T3R]

Something that has always plagued me in Vray is the ability to generate good looking caustics. I checked out the files at the bottom in the caustics section provided here: https://docs.chaosgroup.com/display/...EnvironmentFog and with default settings I get no caustics like in the final image. I know the files are from 2009 but I cannot seem to find what's stopping it from looking like the final images in the example.

My aim is to get caustics reflecting off car wheels, as what I've managed to achieve in VRED seems rather restricted and not realistic in the slightest.

Can anyone help?

[Zdravko.Keremidchiev]

You need to disable Affect shadows in the refract section of the sphere material. We will update the scene.