Casting vs Interfaces which is faster in terms of engine overhead?

Great thank you!

So lets say I want to eliminate the level BP altogether … how would I deal with standalone triggers and actors? There doesn’t seem to be a way to create an “onactorbeginoverlap” inside the node graph of a Pawn Class BP or even a reference to a standalone trigger or object.

I was thinking of putting all triggers on their own BP so then it would be easy to cast in between them and other BPies but I don’t know if that would be overkill or not.

Or is it common practice to still use the level BP in cases like that?