Thanks for the feedback, the theme was the actual first thought, the entire first 2/3rds of development was focused on the cooking aspect, which we thought made for some fun visual trophies and stuff. We were unable to create the art assets for all 20 of the possible trophies though, so for now they're "x"s.
As for sluggish performance, I've heard that from some people, but I've been unable to replicate it with my, or my teams, devices. It might be your browser, a browser add-on, or just that you have a really bad CPU/GPU. We can't control for it.