Well, it seems my story is the same as many others who have complained about ClearWire (aka 'Clear').
I've been subscribed to Clear ISP since November 3, 2012. I found out about ClearWire from one of those mass mailers everybody gets and the thing that stood out to me was the $34.99 price point which I thought wasn't bad, especially for speeds upto 6mbps.
So, I called the 1-800 number and talked to a rep. about the advertised price on the mailer, and she quickly went into what I like to call typical call center premeditated sales mode. She eventually gets around to asking me if I would be doing any gaming or HD streaming video viewing, I tell her yes and she then recommends that I go with the higher speed capacity which is $49.99. Needless to say I ordered the service, got it in the mail, set it up and I was good to go.
The first day I used it it was awesome. I went to speedtest.net to see what speed I was actually getting and I was averaging around 3.5mbps download/1.0mbps upload, which is about what I expected, that was the first week. The 2nd week I noticed my NetFlix connection would keep pausing, same thing with YouTube video's. So of course I tested my speed again and I couldn't believe it had gone all the way down to as low as .39mbps to .90mbps!! Some times I may get 1.0 but thats off peak hours.
After a week of the noticably slower speeds, I call customer service and just my luck, it was a hard to understand non american accent directing me thru what I had already done before I made the call. I did all the unplugging and rebooting and repositioning of the modem AGAIN as the rep wanted me to. I told the rep that my tower signal has always been strong with a consistent five bars lit on the modem so, that wasn't the problem. She then tells me that it's probably heavy congestive traffic on the tower my modem receives it's signal from and that I should try moving the modem to a different part of the house to see if my modem could catch a different towers' signal that wasn't as congested with user traffic. I tried several locations with the same results.
They won't admit to it but it's exactly what they're doing.
About to go with Charter ISP and recommend that no one ever touch ClearWire, in my opinion they don't deliver what they advertise.