For the past couple of months I've been having major internet connection stability issues with my ISP (Charter).
I have their 100Mbps package, but most of the time the speeds are all over the place. For instance, I just got 0.39Mbps down (as in, < 1Mbps) and then right after it got 50Mbps. Many times I do get in the > 80Mbps range, but the speed is just all over the place.
Charter has been out a dozen times and has replace all the wiring from my modem all the way to the pole outside and the modem itself (Motorla SB6121) has been replaced a couple of times.
I have an Airport Extreme wireless router.
Charter is stumped and I am too. Is there some sort of test I could run to see if the problem could actually be coming from my Airport Extreme?