For anti-aliasing – if necessary use Turbosmooth OpenSubdiv NURMS Subdivision and so on.

Who works in the V-Ray version is lower than 3.1 be careful – in materials in the section BRDF is Microfaset GTR (GGX). If your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – which is preferable for you.