How to scale Render Target Fluid Simulation?

(postes this Question also here:
I am trying to use the Render Target fluid Simulation for my Game…**

Unfortunately the Square is rather small and I need it bigger.
But scaling that square also makes the waves much bigger…see pic:**

big plane.jpg

Tiling the uvs Copys the waves :frowning: same goes with copy the blueprint into to world…see pic

4 planes.jpg

I also tried to make a bigger high poly plane…but with that it completely stops working :frowning:

I Realy hope somebody can help PLEASE**