Have you tried using Flowmaps material function? I’m not sure if that’s what you want, but check in your Engine/Functions/Engine_MaterialFunctions02/ExampleContent/ for a FlowMaps material to see how it’s used. I think you need to have pretty much the same but with 0 speed, so nothing would move. So provide your Diffuse and Normal maps, and your flow map, and then hook 0 to the Time input.