Anyone else having lag with the display on the s4? What I mean by that is when you change the volume with the side buttons, the volume control temporarily comes up over the screen. When I do that, it either doesn't come up at all and will come up minutes later. Or itll come up and stay there for an extremely long amount of time. That's very annoying when watching a YouTube video. The actual volume change happens immediately, its only the on screen volume display that lags. Anyone else?