Picture-in-picture effect with independent gameplay using the same environment gameobjects.

Hi~ I’d like to add a second cam for pip effect in my game that shows the other player’s gameplay. So I was thinking to duplicate the game environment for the match player and add a second cam to make pip effect, but consider the performance, is there anyway I can use the same environment to make this happen?

You mean like in portal? Can’t you just add a Camera to the second player that shows what your client would see from his position and rotation?