Since you've already had a tech visit...
I've asked an employee to check the CMTS for real-time and historical RF signal reports from your modem. They can also check your local node/plant for any degradation or error reports. You can expect a reply in this thread.
Hi FTD. We apologize you are still experiencing issues with your internet service. I can assist in troubleshooting your latency issues. As nerdburg recommended, 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 and account primary phone number so I can access your equipment.
I certainly understand your frustration with your service experiencing intermittent latency.
We cannot speak on behalf of the Node service capacity in your neighborhood. A field technician would need to take measurement while at your premise to determine if that is a valid issue. The best course of action to get your service issue fixed, would be to move forward with scheduling another technician back out to your premise so they can determine the root cause of your issue. Please let me know if you would like to move forward with setting that up.