We wouldn't blame you for doubting T-Mobile's claim that Binge On 'optimizes' mobile video instead of throttling it -- that sounds like a classic euphemism. And it looks like your skepticism may be well-warranted, if you ask the Electronic Frontier Foundation. It recently conducted tests suggesting that the cap-free viewing option throttles every video download and stream to 1.5Mbps, no matter which service you're using or how good your connection might be. While T-Mobile says it's shrinking videos to 480p, the EFF shows that the carrier is simply reducing the bandwidth to make most videos play at 480p. If a service doesn't have a low-bandwidth option, you get stuttering and other hiccups.