Sorry but we are not able to reproduce any new performance issues in Chrome - we tested extensively and measured memory usage in Chrome as well as Firefox. It is likely something specific in your play environment that has changed rather than the game.I'm definitely seeing really bad performance on Chrome as well. I just updated to the newest version and restarted and I still see it. After restarting I did the Mia workout scene and it gets worse and worse as the scene goes on. I've played since the first release on the same machine/browser with only occasional performance hiccups before.
Not that the game has amazing performance or anything, it is definitely a beefy one for browsers to run, but there was no performance degradation in our tests of old vs new engines in Chrome.