Experiencing Packet loss and Lag issues
Edit: Issue was taken to ComcastCares on twitter. They were helpful in scheduling a tech visit for me and verified that the appointment is in the system. I will be adding another update on connection quality sometime later next week.
Edit: For improved visibility I'll be placing the link for the most recently recorded modem signals here
1/19 2:10 pm
When we first got our Internet service 3 years ago the signal levels were great 40 db all around on the downstream, the only issue the line installer mentioned was that the signal came in too hot and installed a splitter in front of the cable modem to tone it down. Recently, the signal levels have continued to weaken to where we were experiencing intermittent connectivity issues so I decided to replace that with a forward path attenuator to clean the signal up since we only have one coax run in the house connecting to the modem. I also inspected and tightened any loose connections from the modem to our home tap next to the power meter, but there are still times throughout the week where the internet gets flaky which isn't always consistent, but appears to happen more during the mornings and evenings, it also happens sometimes in the afternoon. This is most readily observed during video conferencing and online gaming.
The only place I cannot do a line check myself is the aerial drop next to the powerline since it's real high up. The downstream power levels tend to be pretty erratic, one night it was reaching 11 dbvm on most of the channels so I had to install another pad to bring those levels down. Currently there is only a forward path attenuator on the line and below are some of the screenshots. In the last screenshot some channels are getting really close to the 35 db floor with one going under at 33 db. I forgot to take a screenshot of the event log before resetting the modem, but there were plenty of T3 timeouts listed in it.
If a line tech can come check for the source of the issues on the line and bring the signal quality back to what it was before that would be great, especially since a majority of the classes are being offered only online now.