For 3 months I've been experiencing extreme packet loss and speed drops. I have a plan for 300 mbps and it drops to 5-10 mbps sometimes. At all times I have packet loss. I've tried replacing the equipment, calling for the outside cables to be checked for maintenance, and changing ethernet cables. I posted screenshots below of everything that's relevant to my problem, if anything else is needed, please tell me. The packet loss is normally a lot worse (20-55% on ping plotter). My zipcode is 60639, and I'm not sure if others in my area are experiencing packet loss, but based off other threads I'd assume everyone else is as well.
HI I'm also in Chicagoland and have a similar story -
Tried multiple cable modems, new line ran, etc... While not every situation is the same, Comcast had to replace a signal amplifier a few blocks away from me and all the T3 and T4 errors went away and I'm now back to high speed with no drops. I also tried multiple modems, new line run to the house, etc...
You have a terrible connection ! Everything is out of spec !
That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.