Displacement not scaling

[simonb1]

Hi all,

Trying to create roof tiles with a decent diffuse and displacement map from Poliigon.

However, when I create the material in Vray for Sketchup, the displacement map does not seem to be scaling with the diffuse map when I change the texture size via the SketchUp UI.

The displacement map remains tiny and barely noticeable without zooming in say 500%.

 

Should the displacement map not scale with it as it is in the same material?

It is basically an exact greyscale of the diffuse... surely I don't have to adjust the UV settings in the displacement?

 

Thanks.