High Jitter causing instability in voice programs along with games.

Did this, eventually led to a tech being sent out and find nothing out of the ordinary. The issue is intermittent and the tech doesn't stick around for too long, internet was disconnected for around 15 minutes each check so I assume around 10 minutes of that was hooked-up to his diagnostic tool. Tech would need to sit out here, monitor, and chart the data in real-time for the duration of the 2 hour visit window to see what Im seeing.

I'm not sure what other technical info is needed for this to get properly escalated. Attached picture has more info and also speedtests using Cox.coms speedtest. (https://www.cox.com/residential/support/internet/speedtest.html) 

"According to Cisco, jitter tolerance is as follows:

• Jitter should be below 30 ms.
• Packet loss shouldn’t be more than 1%.
• Network latency should not go over 150 ms. This is the latency in one direction meaning the round trip time (RTT) would be 300 ms.

These figures are best practices for maintaining quality of service (QoS)."

According to Cisco on what is considered acceptable jitter tolerance, I have a major issue.

IMPORTANT: pingplotter screenshots - the 12 hour scale is crunched so the jitter data gets averaged to make the graph fit. All of the Cox.com speedtests were run within a 10 minute window. Please read the notes next to the pingplotter screenshots for clarity.
https://imgur.com/lRTYwA6

Xearu, can you please email PingPlotter results to us at cox.help@cox.com? Please also bypass your wireless router and perform the tests while hard-wired to the modem. -Kevin M. Cox Support Forum Moderator

I have already done this as directed by LisaH 11 days ago. Will resupply the info to cox.help.

https://consumercomplaints.fcc.gov/hc/en-us/ is how you get Cox to stop overselling nodes and packages they have zero infrastructure to support. 

The tech that just left was the most polite and well versed in all the info I was able to give him, even taking the time to go through my account history to get a full overview of the issue. I was speaking with him outside, properly distanced, as he pulled the line data from the tap. The issue happened to occur right as he begin the test. This is the first time a tech has actually seen the problem first hand, had a ton of jitter peaking at over 350ms, as well as 2% packet loss. Also checked ingress on my end and everything looked great. Hopefully this is the first proper step of many to getting my issues resolved.

Well good luck, I know how frustrating it is. Please post if you get a fix so I can reference, of you don't mind! 👍

Will do. Ill update the thread when I get new info.

Wanted to chime in and say I'm in the same situation on the West side of Phoenix. Had a tech come out who was extremely helpful and even ran a coax from outside into the house straight to the modem to give me all the info to prove it isn't on my end anywhere. He agreed on the node saturation and that a request is put in to resolve the issue but that there is no way to check status or even know if it will ever be honored. My internet becomes nearly unusable between 11am and nearly 9pm. I've been running PingPlotter constantly (bought the program just to collect data) to show that the extreme difference in internet performance throughout the day. On top of everything, I haven't had a speedtest above 500mbps ("upgraded" to Gigablast about 2 months ago) so I attempted to downgrade and it's more expensive to have the Ultimate 300mbps tier. False advertising, poor infrastructure and lack of initiative finally led me to do what @jonathonjoseph  said and put in an FCC complaint, for whatever it may accomplish.

steph2109 spread the word my friend, only way to take on giant corporations like Cox is through the FCC as no one individual would be able to drive the change that is needed. After this is all said and done this might hopefully open law makers eyes to the gross negligence allowed due to lack of regulation in favor of the consumer when it comes to broadband communications. Best case we overcome this virus and we get new laws regulating companies like Cox from being able to oversell the infrastructure they actually have in place.