It's because PA is dumbass enough for not giving us "hide other advanturers" before releasing massive event like this. Just think about it. Our phone or emulator and our internet connection may strong enough to load our activity or maybe 2 or 3 other players. But during BRS or Laytenn, the phone and internet are forced to load at least 700 people's activity around our character. Lagging internet/fps drop and force close is inevitable for people with average phone.