Shadows on a material with bump

[franciscotirado]

Hi guys,

 

I have a little problem with the shadows in this scene, it is first time happen to me and I have no idea what else to change in the settings.

 

The model was done by a workmate with Archicad, saved as 3ds and later exported to 3ds max and rendered with Vray. Usually this is a typical workflow that we use at the office, but never gave me that problem.

 

 

As you can see, the shadow edge on whatever material with bump (it doesn't matter if is 30 or is 100) get like blurry, and is all around the scene. I leave here a couple of pics with the same material with and without bump. Any of you have an idea of how fix that blurry effect on the render?

 

Thanks in advance.