Lag spikes across all devices on the network all at the same time.

These issues are still happening, same consistency of around every 11 minutes or so. 

Since then I've tried a few other possible solutions which then failed, like unplugging all network equipment and giving the modem time to rest. 

I also had a thought that the modem might be overheating, but upon giving it a cooler environment and less strain on the traffic going in, the issue stayed the same.

Could you please send our team a direct message with your full name and full address @user_ep4lra? Our team can most definitely take a further look at this issue.To send a "Direct Message":
Click "Sign In" if necessary
• Click the "Direct Message chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send

message has been sent

Last update on this issue before the in person appointment. 

I wanted to see if the problem is coming from the gateway hardware or the coaxl cable and upward from there.

After the lag happened, i started a timer and restarted the gateway by unplugging it for about a minute.

Upon giving it power and waiting for connection, I waited another few minutes for the 10 minute interval to happen, and it did not lag at 10 minutes.

It lagged 10 minutes after the gateway went online, so my guess is that its a faulty or malfunctioning gateway and would need to be replaced.

Can you get the account holder to reach out, so we can get that tech visit scheduled? 

we have already scheduled a tech visit for tomorrow