Wondering why that YouTube video isnt loading? Blame your Internet service provider. At least thats what YouTube is saying in a relatively new feature that ranks ISPs based on how easily they stream videos on the site. Some YouTube users are seeing a blue bar reading “Experiencing interruptions? Find out why,” under choppy, buffering or fuzzy-looking videos, Quartz reported this weekend. The bar links to Google’s Video Quality Report, a feature that ranks various ISPs by their video streaming performance. …