So I've been having this weird behaviour of the touch screen on my S4 during games. When I'm needed to hold my finger on the screen for continuous gestures (like moving) sometimes the screen stops registering the touch (it's like I've lifted my fingure off the screen, but I haven't), so I have to lift my finger up and press the screen again to continue moving. It's happening really often and it's really annoying for a game like Super Hexagon where if you stop moving for a milisec you're dead. Don't think I've read anyone else having the same problem. I've been having this problem on the stock Jelly Bean 4.3, CM 11 Kitkat 4.4.2 and recently I put the unofficial stock 4.4.2 KitKat. Is it a hardware problem? Any help would be appreciated!