This has got to be a bug of some sort, right? Maybe only a visual one. I just fought against Amy and I watched the AI's timer between my turns. It stayed at 20:00 most of the time, sure. Then on one turn I saw it drop down to 19:59 the instant control switched to Amy. I figured I'd see a gradual decrease like this through the rest of the match, but when it finished animating her turn (where the AI surely "moved" in a tiny fraction of a second) the clock reverted to 20:00. So, because that's really weird, I figured I should report it as a bug. Hopefully it doesn't mean that anything's amiss with multiplayer timing.