You are lagging out, this is a problem with DSL. AT&T is the worst DSL in California, because the did not update the 1950's hardware prior to installing dedicated internet lines. For this reason, when connecting to a service like WOW which requires a good connection, you will lag out. My suggestion, switch to your local cable internet provider. ie COX/TW you will no longer have this issue, however you will pay about $100 a month for max connection speeds.
Here is an example of my current connection speed.
Granted I use Timewarner in West Los Angeles, but for $100 a month I'm getting the best service out side t1 in LA.
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p.s. I know that AT&T bills U-Verse as being fiber optic. But the truth is it is Fiber optic to a hub, the hub connects to the old copper phone lines, the copper phone line goes to your block, where it switches to another set of copper phone lines, that go to you home. They try and place the hubs about 1-5 miles evenly spaced out. Only it isn't a guarantee.