Displacement not working for imported model from Archicad to C4D

[haiku]

As seen on this image: The model on the left and the cube on the right use the same material. While the cube has visible displacement, the displacement on the model is not existent. Also materials look flat and washed out when used on imported model, while they look ok on objects created within C4D. Any resolution?

https://gyazo.com/758dfebc25f298f1f4f798fe4ca09a65

[TomG]

Could be an idea to share an imported model with us (https://help.c4d.corona-renderer.com/support/solutions/articles/12000033461-how-to-report-issues-c4d). My initial feeling would be missing normals, or perhaps something to do with UVW maps or other co-ordinates of the model.