call from pointers vs objects

Question

why is more efficient and faster call member functions with pointers than doit directly with their objects??

Answer 1

Ok It’s more efficient and faster to call member functions with pointers than their objects

because:

When you call an object the computer search through every chunk of the memory to find the object so it is easier for the computer to give it the address of the value than giving the value and search for the address.

I think