Hi,

I am problem with uv, i have this fractured ground with falling pieces. the problem is that my uv's moves every frame and my texture/displacement also moves. Is there a way to pin my uvs or texture.

There is a node called “Rest position”. Also your displacement noise should not be dependent on world coordinates. It´s discussed in this tutoria I think:
https://vimeo.com/42988419 [vimeo.com]