Full screen video could skip most of the other composition that needs to happen, though. So while the video decoding itself may not be any different, it certai

Full screen video could skip most of the other composition that needs to happen, though. So while the video decoding itself may not be any different, it certainly won't have to go through drawing everything else that would otherwise be on the screen. Edit: as the sibling noted too, they could also de-prioritize other apps since presumably you're not really using them.