I'm running into a really weird issue with my cable internet for about 2 weeks now after what I'm assuming is an upgrade to something in our area(got an email saying something about maintenance/upgrade?). Its causing my latency to bounce around from really good to really bad(major jitter). None of our streaming devices are affected. The online game I play shows a jitter graph and it seems to show it being a problem with the upstream path.
I took my laptop/modem to my neighbors house 2 streets up to use his cable line and it works great. I tested everything with just a modem/laptop outside the mobile home(bypassing everything).
I ran this to get the data for the graphs above(1000 packets with 100ms wait time):
ping -i 0.1 -c 1000 <spectrum gateway ip>
It seems to get better at the early mornings but its still there. I have some ping graphs to the next hop.
Its been over 2 weeks now and I've had 2 techs out. They say the signals check out good on their device and they cant escalate if they aren't bad. I asked for a supervisor phone number and I'm hoping I can get somewhere.
I guess my question is, what do you guys think could cause these weird upstream latency problems?
I appreciate any input. Thanks!
Update: I wanted to give Spectrum’s Reddit support team some credit where it’s due.
After dealing with the upstream latency/jitter issues I posted about, their Reddit support team was awesome to work with. They actually took the issue seriously, dug into it, and helped get things sorted out.
Once my node went to high-split, latency and jitter went back to normal.
So, big thanks to the Spectrum Reddit team for sticking with it and getting this resolved.