youtube appears to be doing QOS throttling on some of their named fe's you need to pick one that isn't in your usual path if you're having issues. edit: It app

youtube appears to be doing QOS throttling on some of their named fe's you need to pick one that isn't in your usual path if you're having issues. edit: It appears that the 173.194.55.0/24 and the 206.111.0.0/16 range belongs to Google. Someone revealed that YouTube video requests were utilizing intentional bandwidth throttling that is actually built into their (YouTube) system. Once these ranges are blocked, YouTube's player logic will fall back to Google's datacenters and stream at beautiful speeds.