I need help replicating a rendering style in VRAY 3.4.

In VRAY 1.0 I used to use a default visopt setting called gi_irmap_high.visopt but since you can no longer use .visopt files in VRAY 3.4 (now they're .vropt) I am having a really hard time replicating this rendering style.

The setting creates a very soft shading, meaning no linear shadows and no sun lighting. Shading is based solely on proximity of other object or corners (see attached).

I used it to create diagrams where non realistic lighting/shadows are not necessary, something like what BIG does with their diagrams (see attached). Any help would be very much appreciated, I have been scratching my head on this one for a while.

P.S. I also dont have access to the previous VRAY version so there's no way to check what the setting file was doing.