Well SBMM has nothing to do with that. I just started playing Crucible this past weekend with the broken matchmaking. The majority of matches, I keep trying to figure out what guns the other side was using as it seemed like I would take two bullet hits and go down. Yet I basically have to use full clips on my end to take someone out. Found out about peer to peer yesterday and lag. I say put put SBMM back in. At least matches will be a lot less lopsided. Lag will still be there.