When creating a PBRmat in 3dsMax and exporting it via BabylonjsExporter (Version:20210811.2) the metallic value gets ignored (set to 0) if there is a roughnessmap set.
The bug occurred a few Versions earlier but I decided to wait reporting the bug.
Hey guy’s,
This is NOT a bug but the behavior of Max. Either Map OR values. In order to let you export both, we expose a check box, “use scale values” under the babylon’s material properties, which might make the tricks