Vray old material to GGX is a script for 3d max.

A script for complex conversion of old scenes and models made in 3Ds Max Vray, under the PBR concept. As a result of this concept, such shaders as Phong, Blinn, Ward, based on empirical data, have lost their relevance, and in the script they are automatically replaced by GGX. Gamma 2.2 is set, and missing and outdated plugins are removed. Just drag it into your scene and it will do its job. The script was tested in versions 2016+