I'm not sure what your point is. You said the nodes are slow. They are not slow, and will handle thousands of requests a second when configured correctly.
If you arent getting that then you are doing something big, something inefficient, or something stupid - and that would be the same on any size node.
If you arent getting that then you are doing something big, something inefficient, or something stupid - and that would be the same on any size node.
Size your instances accordingly.