v ray ignoring max rate irradiance map

[frasca88]

Good morning, I have a problem with max rate of irradiance map. I don' t know why but it is blocked to "+1", even if I change it. The strange thing is that it only happens when i do the render with materials, when i override materials, doesn t happens. I have attached two pics to prove it (the first is with overrided materials, the second is with materials)

[svetlozar.draganov]

Most probably some of the materials have Reflection/Refraction interpolations, those are also calculated with IM and if IM settings are -4/-3 but Material interpolation is set to -1/1 the final interpolation would be combination of both -4/1.