Displacement problem

[loco]

Hello,

I'm am getting odd popping patches in this shot. Please take a look at these 2 shots. http://mokme.com/clients/Vray/

In shot 1 notice the popping in the lawn. Shot 2 is using the same displacement material and there is no popping in the lawn. This popping bug only seems to happen when the camera Dollys. When the camera is orbiting or panning, the displacement works fine.

I've tried 2d and 3d displacement and still get the same results. Any thoughts on how to resolve shot 1?

All assets are located on my site. Feel free to grab it.

Thank you

Carl

[loco]

Ok resolved the issue. Need to collapse the modifier stack and then add 3d Displacement.
Turbo smooth was the enemy.

Thanks to Vance Miller for your time and effort.