With modern computers we should be able to recite religious texts fast and efficiently. Even a Raspberry PI with a solar panel could probably get up to some decent speed compared to a prayer wheel. Not sure it helps you reach nirvana though. :)

Well since "Nirvana" is a somewhat shared concept in several religions. I know of atleast one religion in which the point is to achieve "automatic prayers at super fast speeds" and obviously that isn't by rapping verses. it even transcends reciting the index or "thinking" of it.

Legend has it that a certain prime follower of this religion could finish the entire scripture tens of thousands of times while getting on to a horse.