I guess it depends on your opinion of slow. I think really it's just expensive. At my company we buy a lot of broadband backup for satellite offices (many, many dozens) and work with every cable provider in the southeast, and we can get 100-150mb/s in pretty much any area that isn't the total "sticks". Unfortunately it costs $250-$300/mo (this is for commercial service, residential is typically about one third that price). So yeah, pretty fast in my opinion, just pretty pricey. This includes Comcast, Mediacom, Brighthouse, Cox, you name it. Almost all of them offer 150Mb/s service I think Mediacom is the only one that stops at 100Mb/s, at least in the areas we run into them.