I often time have trouble watching twitch.tv streams at 1080p, at times it buffers even at 720. Twitch offers a download speed tester utility to check if the problem is on the user's end. That site is testmy.net, and according to it my dl speed varies from 600kBps to 2 Mbps (that is a lower case b!), whereas my advertised DL should be 10MBps, which i almost reach on speedtest.net, which one should i believe? How can i fix this issue?