Horizontal line cuts texture in 2 tones

[omaralvarado]

Hey guys, I've been looking through the forums for a similar issue but haven't found anything similar yet so I came to ask for help.

 

I set up an interior scene with a dusk environment and somewhere along the way this weird thing started happening, on one of the boxes I have set up for one of the walls on the lower part a horizontal line appears independent of if I have lighting turned on or off.

 

The only thing I've noticed is that it disappears when I have all other models for furniture etc. hidden

 

So far I don't think it's a geometry problem since I have tried changing the box for a different one and I have tried different materials; I do have to mention that this issue is only happening with this particular corner of the scene with this particular box.

 

I attached some unfinished test renders of a close up of the particular corner.

 

Test One is a render with only basic geometry for walls, floor, roof and windows on.

Test Two is a render with everything on except for lighting.

 

 

 

I've been trying to figure this one out for a couple of hours now but for the sake of me haven't been able to solve it so any help is greatly appreciated.

 

As extra info I'm running Max 2016 with vray 3.20 on windows 10