I got the guy's name and here's what happened. He got up onto the lobby roof and I was like "yea that's legit" then he started running at 2x speed and I was like prolly lag. Then finally he did 2x speed when everyone else was walking at the same speed. I then said that I was going to report him and he left. I'm sorry i don't have a video or a screenie(useless) but he did hack in front of me.