High Ping and packet loss

Still having issues.  Large spikes in latency and high packet loss to a variety of Comcast servers, google and iracing gaming servers.  Used pingplotter and traceroutes to show Comcast who private messaged me on Twitter.  However they always say to check Xfinity speed test for ping-which I believe is the best case scenario.

not sure where to go from here.  I have worked through all of the troubleshooting guides I can find including cleaning up my PC but my signal is still extremely unreliable during peak hours.  For a 300mbs plan through a direct Ethernet cable I expect better than this.

Early Morning seems to my best signal.  Too much signal loss the rest of the day for me.

the solution from the Comcast remote techs is always to reboot which doesn't help.

anyone have any other ideas?

Here's a bit more data.  I included an am ping plot and an afternoon one below.

Hoping someone can help me determine a path forward.

The morning plots are consistently better and my connection is much more stable.  The afternoon plot is from a few days ago but this is typical of my experience this week.  Iracing is almost impossible due to dropped laps and quality with server-have been in contact with their support but it seems to me that the problem is on route.

The fact that the signal is always better earlier in the day leads me to a few conclusions-router, modem, signal are generally working at least at times.  Since rebooting the modem/cycling the router in the afternoon doesn't solve issue, its likely bandwidth or signal quality related?  its not overuse in the home-typically we turn off wifi devices when not in use-I do have QOS enabled on the router to prioritize the LAN connection (not sure if that really does much).  no kids watch movies during these tests and PC use

Just chiming in to say I'm having a similar issue in New Mexico. Been seeing this behavior for about a month now - significant latency and jitter at my first hop after my personal firewall. Like others, this has made voice, video and gaming applications unusable for several hours each night.

first hop

https://imgur.com/a/cEXzKL6 

I believe the issue I am having is bandwidth related but so far, have been unable to get any help from Comcast.  I have worked all troubleshooting guides.  I did add an attentuator which boosted the upload modem power (was originally only 37 which the Comcast twitter rep said was low.  Its now maybe a little high at 47 but within model specs (SB6183). My PL trends have been the same regardless.  Decent latency and very little PL in the morning.  Increased latency and many drops in the afternoons-evenings.  I have been tracking this for many days-twice a day for several weeks now.  Looking for advice on how to escalate to Comcast and hopefully get to a solution.  See modem status and ping plot examples below.  Open to other feedback and would appreciate your help

This is exactly the same issue I'm having.  Cannot play any games on PS4.

Sorry to hear others are having the same issue.  Yesterday am was a decent signal until about 10am PT-  high latency and packet loss again in the late afternoon when I tried to get some online practice in.   Almost impossible to drive even on the new West Coast server Iracing has added.  The issue isn't on their end.

any suggestion to get Comcast to acknowledge and provide support to help solve this?  Since it's likely infrastructure related ( lack of capability to handle peak load) I don't need a tech to come to my house.  Just need Comcast to check the system.  The outage map says everything is fine but clearly not the case.

Here's this morning-much better performance so far.  We will see how long that lasts....

I have been having same issues with packet loss and lag since mid-march. Convinced now that its not my harware and is in fact an issue on the comcast side. Hoping for them to provide some answers!

So yesterday, signal was pretty good until around Noon ish.  today, high packet loss again.   Will call Xfinity again and see if I can get anywhere- open to suggestions.   seems like we as consumers need to build a collective case to get some better support as there appear to many folks on here with a similar issue.  

I did reboot my modem out of desperation tonight since the signal was even worse than yesterday evening.

I got this error for the first time on the log.  anyone know what that means?

First attachment didn't show both-this one shows last night and this morning