Since you've already had a tech visit...
I've asked a Comcast employee to help you. You should expect a reply in this thread.
Hello, anthonyc4 -
Thank you for reaching out regarding the internet issues. Let's take a look at the account together to see if there's anything going on with the node or the modem. To get started, please send me a PM with your first and last name.
To send me a Private Message, please click my name “ComcastAlly” and click “send a message.”