I've been pulling my hair out over this one for a while now and have been unable to find anything on Google to help.
I recently bought a Samsung Galaxy Note 8 (wifi UK version) and found a very annoying issue with it. I've found that whilst using touch input, the screen can become unresponsive to touch for a few seconds. This seems to happen once every 5-10 minutes and lasts 3-5 seconds or so. It's especially annoying when playing games that rely on touch input. It's most noticeable with Plants Vs Zombies and Scribblenauts.
The tablet as a whole isn't hanging or crashing, because the game is still running, the music still playing and the screen still updating. It just doesn't register any touch input.
The only thing I found that might have been remotely helpful to this issue was a forum post claiming that Dropbox could cause this. I disabled Dropbox on the device and didn't notice any improvement.
I believe the firmware revision is 4.1.2 Jelly Bean.
Does anyone know what to do about this?
UPDATE: The 4.2.2 firmware became available for this device yesterday. Installing it seems to have resolved the issue (so far).