RPAS Client performance

I've got a question about how the rpas client behaves depending on the complexity of a hierarchy.

Assume that we have a very simple hierarchy structure - one branch of 5 levels.

Just for example: store - district - region - project - country

Also, assume that all data is stored and edited at the bottom (i.e. store) level. All others are just for a view.

Then we want to add a second branch to the hierarchy. This branch is view only. No data is edited or stored there.

store - district - region - project - country

store - city - alt. region - business - total