Possible Comcast Packet Loss Between Atlanta and Chandler, Az

I suspect random packet loss between an Xfinity (Comcast) cable modem user in Atlanta, and our Chandler, Az data center. Traceroute between the Atlanta user and Chandler shows Comcast/TW backbone handing off to Abovenet/Zayo, finally to Internap for local loop connection. Can anyone verify this? David