Does the Rinnegan eye put more strain on the user? In the anime, it is shown that over usage of Byakugan and Sharingan eyes will cause the user to strain. Does that happen with a Rinnegan user?
They never mention strain of the Rinnegan in the manga so the following is conjecture

Nagato (and his puppets) seems to have the Rinnegan up 24/7. In flashbacks to the Sage of Six Paths he has Rinnegan up so I believe it does not cause strain like the other ocular powers