Polys: 88,959

In max-file on all objects Turbosmooth modifier, in obj format - without it.

Model contains Multi/Sub material.
Turbosmooth modifier - instance on all objects, Render Iters is checked.

Those who work in V-Ray versions 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. Choose Blinn, Phong or Ward - whatever suits you best.