Round 1 has an out of bounds exploit players are using to take a keycard out of the map, in the right hand side of the hallway, as you look towards the main area of the 2-person starting rooms, either of the 2 back-side doors on the right have no collision at the top of the doorframe, meaning if you racket or jump-push someone there, they end up outside the map with a keycard, and the game is unable to continue.