Hi, I have trouble adding displacement map to my materials. my displacement maps are standard and I have downloaded them from valid sources like cc0textures but when add them to my materials they make materials look dark and only fixes with high bump amounts (like 500) which is’nt needed at all.
I’m using revit2021+enscape3.4
Looks like the displacement is in the negative direction and the material is obscured by co-planer geometery.
Thanks for your respond.. I even tried negative bump amounts or inverting the map but still got dark materials 
is there any way to fix co-planar geometries?
The only way to fix coplanar geometry is to modify the geometry. Could it be the geometry from a link to file? In many cases, structural will start at a level and work down while the architect will start at the same level, and also work down with regard to floor finishes. If this is the case, can you start at the level and work up in a positive direction?
I should try what you described to see problem solves or not .anyway, thank you very much 
