Material Importer (Rhino,Revit)
Install the addon in Blender Edit/Preferences/Add-ons/Install. Then select the zip file.
Remove the older version before updating and then install it again.
Import Fbx model from Rhino or Revit into new blank scene. Check if the material values for Metallic, Specual and Roughness are wrong.If they are - use the addon by clicking on the button under Object Properties/Importer/ FBX Rhino,Revit.