User experience is everything else but smooth

The app looks awesome, unfortunatley its user experience is everything else but smooth. The UI constantly lags, hangs and even breaks sometimes, requiring me to press Cmd+R to reload the whole frame. Clearly Boxy is just a web-wrapper to Inbox, with a few nice hacks built right into it - unfortunately these hacks appear to make the usually quite smooth Inbox UI pretty sluggish and very annoying to use.

@Developers: Please fix these issues and Ill be the first to give a five-star rating.

Marius M. about Boxy for "Inbox by Gmail", v1.0.1