Packet loss every day at a certain time

Is this with a WiFi connection ? If so, as a test, does a computer / device that is hardwired directly to the router / gateway device with an ethernet cable have the same problem ?

With this test, we are trying to isolate this down to being either a WiFi-only problem or a problem with the general connection to the Comcast system which would of course affect both. It's a good first step in troubleshooting before proceeding any further. 

Good evening @user_5k329k, and thank you for reaching out on our Community Forums, we hope you are having a wonderful and safe Thanksgiving. We are sorry to hear that you're experiencing packet loss between 8 and 9:30 PM every night. That sounds frustrating and disruptive. Our team will be happy to troubleshoot further and run some diagnostics to see how your signal levels are. To get started, can you please send us a Direct Message with your first and last name along with the service address on the account including any applicable unit or apartment numbers? 

To send a "Direct Message" ("Private") 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 it

@user_5k329k 

Did you have a chance to try that test ? Please reply right here on these public help forums. There is no need to go private yet.....

So to clarify. You are saying that this happens via both ethernet and WiFi connections ?