Karba, I just found out that this is a max specific problem..
I still believe this purely because of the fbx file I purchased.
Octane renders just fine.
It's odd but it renders badly same in Scanline. And smoothing gets corrected if object is copied. Funny isnt it
The object becomes triangular facet after applying the shell modifier.
If you still want the file anyway. it's attached.
You can see the final render of the car here
viewtopic.php?f=5&t=42950You can also see the front window glass of the car has also the same facet problem due to shell modifier.
Thanks again,