upgrade gateway

I am curious about your issue so I would like to hear the answer as well. I am no expert but I'm not sure it is the modem as much as it is the speed tier you are in. each device takes some of the band width and if you are in a slow speed tier the HD cameras seem to be eating all the band width.

Hi, @user_a5b70e, we can certainly take a look at your current internet speeds compared to the number of devices typically connected. This would indicate that an increase in speed may be needed, however, I always like to troubleshoot the current device to ensure the connection is performing optimally before attempting to add more devices or services. 

To better assist, could you please send our team a private message with your first and last name, and full address?

To send a private message, you may need to:

• Click "Sign In"
• Click the "direct message" 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 it

Upgrade speed it's not the modem. HD takes a lot of bandwidth

I could be wrong, but I don't think internet speed is the issue. I'm already at highest tier and it's testing at 1200+Mbps. I think it's just the local throughput capability of the wifi network (managed by the gateway)