Renders for preview are made in Corona Render 10
On the Corona Legacy Mtl model
Conversion of materials for V-Ray was done with V-RayMax Converter PRO

The boots and brush bases have a turbosmooth modifier assigned to them when rendering, stacks are not collapsed

All textures, materials and objects are logically named. Texture resolution is 2048x2048 and 1024x1024

"For Corona Render: it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR.

Those who work in V-Ray version lower than 3.1, be careful. In the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you."