Packet Loss and Latency Spikes

I can't make it through a single game of Overwatch without getting disconnected. This is absolutely infuriating. The last time I had this issue was on Thanksgiving weekend. I am off work this week and was looking forward to relaxing and being able to play games online, and here's what I get. $75 a month to not be able to use the internet. Last time I had this issue I was literally able to play more reliably using my phone as a hotspot than I was using my home internet. Something is wrong here. 

This just occured:

http://i.imgur.com/rJnBiQW.png
 

I unplugged the modem overnight. There are no splitters, I went and looked in the box last night. Just a ground and cables (reused DirecTV coax cable).

It is plugged into a three-way splitter. I'll try plugging it into its own outlet and report back.

@ChrisL

I didn't have many major issues yesterday, but the issues are back today. I have the modem plugged into it's own outlet with nothing else, and my router is plugged into its own outlet as well. The PC I am running PingPlotter on is connected to the router with a brand new CAT 6 cable. I have connected directly to the modem and these issues still occur, it is nothing to do with the router. Here is another PingPlotter screenshot from a few moments ago.

http://i.imgur.com/JaALW48.png

Current System Time: Wed Jan 04 13:18:32 2017

@ChrisL

Some more info:

@ChrisL

I do not have another outlet hooked up here. Almost every time I get these drops I'm getting a Dynamic Range Violation, which from what I can gather is the modem having to exceed power specs to maintain upstream sync.

http://i.imgur.com/GAtFxRV.png

@ChrisL

I had a technician out here in November, and he pulled the DirecTV filter/splitter off inside of the box and said it was fixed. I left him a detailed note of the issue and I highly doubt he even read it. I was at work when this occurred and my housemate said he was here for 10 minutes tops. I have looked in the box and now it's just a straight connection between the wire coming from the pole to the wire going to my cable modem, the only thing in between is the coax grounding block and a wire going from that to ground. I have only lived in this house since Sept 2015. Is it possible that there have always been issues at this house and that is why the people who lived here before had DirecTV?

I just want reliable internet. I pay monthly for this and should not have to suffer through constant disconnects and internet issues when I am paying for this service, it is not being given to me for free or by charity. I play games with other Cox customers and my internet is dropping as they continue to stay in the game and play. Something is wrong here, whether it be something at the headend, the wire coming from my house to the pole, the coax drop to my modem, I do not know. But I would appreciate having someone who actually knows what they're doing and troubleshooting properly, instead of a subcontractor who is here to do literally as little work as he can possibly do. I work 9-5 Monday through Friday and cannot be here to babysit someone who doesn't want to do their job, and with this problem being intermittent it makes it even worse because I won't always be able to replicate it outside of the information that I have cataloged here in this thread.

I'm having similar problems, and for about the same length of time.  My friends in Starcraft II are getting mad that I keep dropping connection in the middle of matches, and it extends to other devices as well...  I have reset my modem and router numerous times, both by unplugging from the wall and through Cox website.

After seeing PingPlotter, I gave it a shot to see if I could capture what I am experiencing.  Sure enough, there are multiple service interruptions in a 10 minute window.

@Becky

The tech came out and replaced the coax going from the modem to the wall, and also fixed a bad piece of coax behind the wall plate. I will continue to monitor to see if this has rectified the issue.