[Closed] take geometry veld vertexes render

hello
I have splitted animated logo parts which are building one mesh. Putting all parts together with script is OK. But I can not render it as animation because pre-render is evaluating just once and non of callbacks are working with Vray. rendering it with render() works but 500 frames of logo with 20000+ reflection refraction cubes around it on HD on two machines when we have 30 render nodes (but 2 floatig lic so we can work on 2 machines at time).
It is just silly. If anybody has any workaround it would really help.