Spline Mesh - No Collision in shipping (complex collision)

Hey,

I have now upgraded to 4.15 and then after setting “WITH_RUNTIME_PHYSICS_COOKING=1” in the ModuleRules.cs I got at least simple collision working on the spline mesh component. It sorta works but it is not the longterm solution I would want with complex collision where I still get no collision.
I am using this for my game on Steam where I have an ingame editor and would want to have complex collision on those splines for accurate collision detection with different physical materials.

132050-rotat2.gif

I am not sure if there is anything else I might have to set to 1 to be able to get complex collision working and I see from your answer that it should be possible?

Is there anything besides WITH_RUNTIME_PHYSICS_COOKING=1 which I would need?

Thanks