I'm not sure it's entirely an AWS thing; the game works fine for me doing everything except:
1) Last hit on a boss, or
2) (Sometimes) clicking a Chance card.

I have even had times where the game crashed when doing a minimum hit on a boss, reloaded and hit it again with a minimum (this time the minimum calculated a % that would not kill the boss, it did its damage instantly with no lag), and then when I hit minimum again (this time an assured seduction finish) it crashed again.