When events are active it is VERY laggy. Used to be able to play 1-2 puzzles before a crash or it freezes my phone (during one of many ad breaks). Now it freezes counting up my brilliance after ONE puzzle. It's gotten worse. It's been well into double digits how many times it's crashed or froze while I've been grinding out these events. Sucks when I'm trying to obtain all the stickers it becomes virtually unplayable. Seems to run smoother outside the events, however.