OK, let the laggy Aussie say something....
Anyway, the first three games I played were fine, very clean and near to no lag. Although, after a black screen halfway through my third game it started going
a bit jumpy; well,
a bit is a nice way to put it. It took it a little bit before it went away.
My next few games at the start were laggy, but that's just me I'm sure. As for you Mallets, I know your connection isn't the best, but if your playing fine on H3, then I don't see why it would be laggy in Reach.
Plus, I was booted from my third game after the black screen because I betrayed someone by accident.