We moved back to the south loop of Chicago this past February, moving our 24mbps AT&T Uverse service with us. It has been a nightmare from the start and I'm not sure what to do at this point. We've had techs come out and they claim everything is perfect; even tried a new modem/router. They've also offered less..useful advice, including telling me that I must have a "file conflict with my temporary internet files that was affecting Diablo 3". This lag affects me during raid and has killed my 60 barb and my 40 monk that I was playing with my partner. He's lost 3 HC characters this weekend to this.
^ that is inSSIDer showing the overlaps on our channel. I've tried channel 1, 7, 6, 9, 10, and 11. Many times switching channels helps but it lasts no more than a few hours at best. We'll zoom up to 10 - 12mbps a second before dropping down to this:
Our wireless point is about 20 feet away in the living room. I have noticed some issues with my signal strength dropping slightly to 4 - 2 bars, but that's not often. Both computers are affected so I don't think it's distance. It's something on our network.
I'm out of options. I don't know what else I can do to find or diagnose network issues. I'm not really a network expert. Any thoughts or suggestions?