I can understand where your coming from with lag issues. All throughout Reach (and occasionally Halo 4) I had terrible lag. It was due mostly to my weak internet connection, and the only solution was to get a new Router (I think thats what its called... Im not very knowledgable when it comes to Internet), but unfortunately at the time I had no way of getting one. And so I had to truck on with crappy connection.
It wasent until recently that I got a new Router, and better Internet. Plus I find (at least for myself) that Halo 4 has less lag issues then I had with Reach.
Im sorry to say Im not sure what you could do to fix the lag. I think turning off the Router, or disconecting from it for a little while may help. Maybe even disconnecting any other devices from it may also releave some of the weight from your Router, so it dosent strain from playing 4. Other then that the only other option I would think is to get a new router, but dont take my word for it. Im just now getting all the Internet workings and stuff.
Now concerning the conduct of Members whove negatively replied to your topic, I shall say that it was very inexcusible. They should not have replied in such a rude manor, but In their defense, I think your username had a part in it. Not trying to nag, but it did seem trollish, but now that you have explained I can see why you had it.
Even though the replies were unjustified, I hope you can remain a part of the Community. We do have good people here, and it would be wonderful to hang with you around the Forums