So I have a problem and hope someone here can help me, I have moaned a lot about Lag on my X but I have nailed the issue, for some reason if I use any jpg wallpaper it makes my Lag swiping thru app page so laggy but as soon as I use a default apple wallpaper from apple it goes away and the UI becomes supper smooth and zero lag... why does wallpapers cause this im tried cropping them but any download wallpaper causes this issue, any help?