C++ + blueprint performance

(sorry for my english) I have a question: I am converting blueprint in C ++ code to improve performance of my game, but i am confused about method to do this.
One example: i have a anim notify event called in blueprint that call a function written in c++ (this is a simple image for this example: )… This method increases the performance compared to write everything in blueprint?
If I wrote also anim notify event in C ++ , I would improve the game performance compared to earlier example ?

Thanks in advance.

Anyone can help me please?