Hi,
(postes this Question also here: https://answers.unrealengine.com/questions/602454/how-to-scale-render-target-fluid-simulation.html
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I am trying to use the Render Target fluid Simulation for my Game…**
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Unfortunately the Square is rather small and I need it bigger.
But scaling that square also makes the waves much bigger…see pic:**
Tiling the uvs Copys the waves 
same goes with copy the blueprint into to world…see pic
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I also tried to make a bigger high poly plane…but with that it completely stops working
I Realy hope somebody can help PLEASE**