MAX displaement Observation

[glorybound]

Just an observation. I am using a WALLS & TILES material and by default, it uses MAX's displacement. I have always turned that off and went with V-Ray's. I noticed my current render was rendering really fast, as if I had no displacement, so I stopped the render and went to add it. I noticed that the WALLS & TILES was enabled, I disabled it, set V-Ray's up, and now my scene is rendering our slow. Question... why is MAX's displacement rendering faster than V-Ray's. My understanding is that it would be just the opposite. Has something changed in 3X?

[svetlozar.draganov]

How did you turn off Max Displacement? Did you disable Override Max's Displacement from Default Displacement settings?