I have been going through this issue for the longest time. I have comcast cable, and when i do speedtest, i get between 50-80 down and 5-20 up. But when i browse it feels so slow, and watching videos i can barely handle 720p. Downloads are also maybe .75mbps. My pc is wirelessly connected to the router with a high end pci-e card. but even when i have it wired its slow. Is it my box? All the computers in this house have this issue so its not just me, and my pc is a high end gaming pc so its not on my end for sure. Thanks for reading and replying