Problems palying Halo Reach SWAT

Anyone else having problems playing Halo Reach SWAT? When playing Halo Reach SWAT, I am finding the game harder to play. That the other players are shooting, and see me and the other people on my team faster. This all started after the most recent update. I have been in matches that my whole team quit because the other team seemed to be cheating. But, I have seem this in all the games. Does anyone know who to contact?