Vray and box city animation

I have a small problem. I am as always with hurries to make a flight for the streets of a city, simple boxes with maped textures. I don’t have experience of which are the good parameters so that it is well the render and non fliqering without expensive rendering time sure.

The scene has a directional light, with shades vray.

i would be appreciated you you could help.

Settings ?

i send you the max file for show you the scene. ( your hotmail account)

yes. settings.

What version of max are you using?

Can you post the scene and your settings here so other people can help you?