Hi,
Over on the construct 2 forums we've been wrestling with a fairly audio breaking bug. The full post can be found here: https://www.scirra.com/forum/ios-sound-problems-since-ios-9-2_t167412 but to summarize:
When exported with cordova and wrapped with the cordova CLI or Intel XDK native iOS apps from iOS 9.2 onward have begun to distort the audio after the second time the app is booted up. We have tried a couple of fixes but they have all come back fruitless or with a knock on effect.
Any help or suggestions would be fantastic!