Yes, I'm using Wifi. I tried it with the cable. It still gives me lag in multiplayer. It doesn't lag in Campaign. I never had any lag on Halo unless I play in an Australia server. But this time is different I'm jumping all over the screen but my ping is around the 34/66 and 134/167 in usa servers. Also it is only with this laptop, when I try it on my old laptop or my brothers laptop I have no lag. All downloads or windows Apps are off, firewall is off. Drivers are updated. It is really annoying that I can't fix it, because I want to play it on my new laptop :/