I have TWC in San Diego and I am having the same lag issues as the rest. I did all of the ports and everything else people list as quick fixes and it worked for 2 games then went back to insane lag spikes and instant deaths in multiplayer, including co-op campaign. It's funny how you can be in a xbox live party and talk fine throughout lag issues on Halo, and play any other game and have no problem. I think it is quite amatuerish that this couldn't be a quick fix. I bought xbox one SPECIFICALLY for Halo. I've spent about $600 on everything becuse I've always had a great time playing Halo and assumed it would be a good investment.. You do realize that the amount of people with problems is amounting to a really severe percentage of gamers? I for one am giving it one more week and then I, and a lot of people I know, are giving it up and sending everything back (this isn't a threat - it's just pointless to spend money on a game not to be able to play multiplayer in 2015). Couldn't be more displeased with 343 ruining the only game I enjoy playing. Please at least show us you're trying to fix the issue.