iPhone 5 touch tap way off

Loved the first 2. Played maybe 25 levels of this version just fine, all of a sudden touch tap registers way above my finger. Cant cure with restarting the app or restarting app and turning iPhone off and back on. Went into the options a couple times and tapped around, went back to game and that worked a few times.

Great game but needs to be playable for 5 stars

Inventory app seeker about Roads of Rome 3