Not only this, I know that the moment I start Youtube or Amazon instant (I do not have Netflix), the packet loss starts to go up or at least the ping return times sometimes go up to 4000ms. This also happens when I RDP into my Windows PC at work when I telework.
I have tried resetting the router, use it with other channels, use it with and without all possibilities of encryption (WPA, WPA2 etc.) and I really cannot think of doing anything anymore. The Comcast representation said they will reimburse $30 bucks if I got my own router because the issue is not their fault.
I am not sure how to approach this issue anymore. My apartment building does not have Verizon FiOS or any other service. I have given up all hope. Sometimes I feel like adding unlimited LTE/4G on my iPhone from T-mobile and use that as the main Internet hub.