Start here: Troubleshooting Guide
If you haven't already, please post your equipment details (make/model of your modem/gateway/router) and a screenshot of your signal levels and your error/event log. Thank you!
Hello kiroz. Thank you for joining the Xfinity Forums and for creating your first post. I can assist with further troubleshooting your internet speed issues. I'd like to start with polling the CMTS for real-time and historical RF signal reports from your modem. I can also check your local Node/Plant for any degradation or error reports. Please send me a private message and include your full name so I can access your equipment. You can click my name (ComcastJoeTru) to view my profile and send me a private message. Click "Send a private message" and private message me.
Hi kiroz. Since I didn't get a response from you, this thread has been locked. Please don't hesitate to send a private message if you continue to need help with this, or create a new post if you need assistance with anything else. Thank you.