I started playing with unity with the version 5.4.
Then it was possible to change the rendering mode to "deferred" when going to the menu Project Settings -> Player.
I remember it for sure to be next to the "Color Space" option but on the Unity version 5.5 it is gone and I cant find this global setting anymore. :/ I know that I can set my camera to render in deferred mode but I'd like to set this globally to avoid any big render issues.