Cablevision is biggest loser in FCC broadband speed report gigaom.com
To be fair, Cablevision wasn’t the only ISP that wasn’t quite able to deliver what it promised. AT&T also scored below advertised performance, with customers on average only getting around 80 percent of what they signed up for. However, AT&T’s performance was much more reliable throughout the day, with peak speeds only differing slightly from 24-hour sustained download speeds