Worked pretty well up until around the time I got to Fort Joy. Now, whenever any effect is applied to characters/environment the sound cuts out and the game crashes a few seconds later. I've been able to brute force my way through the game by Quick Saving as soon as the sound cuts out, but that's going to quickly wear out its welcome since after reloading it usually crashes again after 5 to 60 seconds.

I'm on the latest iPad Air, BTW.