The shader is ~718 instructions with static, 698 with only dynamic, 734 with shadowed translucency, and 68 vertex shader, all in all not that expensive a large amount purely in the gerstner equations
As for the C++, there really is no reason to go into the plugin unless you want to implement the gerstner equation differently. In fact I’ve modified all included plugins BESIDES the Manager simply because it does exactly what i need more efficiently than i can make it or try to improve on. The one thing i can say is if you plan on changing the gerstner equations in the shader you have to change them in the plugin, they work separately, the plugin uses the equations to calculate the height and the shader has the very same equations for displacement, so if you change the equations in the shader but not the plugin you’ll still be floating around in non existent waves.
As for the blueprint implementation, from what I’ve seen the Manager might be able to be recreated in BP, the only thing i would question is the LoadLandscapeHeightmap function
The rest of the plugins are quite a bit more simple to recreate in BP
Time Manager I’m also not sure about. Longs and Doubles aren’t accessible through BP, and i don’t think epic will make them accessible