Vray sun shadows not showing at small distances.

[scottwadd]

I'm having an issue where geometry that protrudes a small amount (less than 3 inches) from a surface does not cast a shadow from the vray sun, and more than 3" does cast a shadow. I was able to reproduce it in a new empty scene, using default sun settings, in 3ds max 2017, and vray 3.40.02. System and display units are set to 1 foot. Any help is much appreciated.

[vlado]

Is it better if you set the sun shadow bias to 0.0?

Best regards,
Vlado

[scottwadd]

Yes, thank you (how did I miss that!)