Yeah im going to assume it's OS related, it's a little disappointing and puts a downer on the wp8 experience, cos i love the device but these issues are a bit off putting
and yeah i tried soft resets too and it didnt go away either, but i and no one else should have to keep soft resetting their device to get it to function correctly,
atm, it seems much better so, only time will tell if its going to go silly again.
UPDATE: Playing the game after my Amber download/install it runs much better with less crazy battery drain lingering after exiting the game, i also decided when i play for a bit longer and the phone gets hotter to turn the device off for 5 mins to cool down and everything works fine as it should
thanks for the replies guys