So I am not alone. I too have Comcast Xfinity. I am getting 60Mbps down and 12Mbps up on a hard wired connection. I have done everything in my power to see if the constant loss of connection was being caused by my settings, but Destiny is the only game that i have issues with. I constantly get the Caterpillar and Hawk error codes multiple times when playing. It has come to the point where I don't even want to try anymore.