Intermittent packet loss

Hi, I've been dealing with an intermittent issue for around 2 months now. Every few hours I'll have ~30 minutes of very high packet loss. It will prevent me from joining meetings, or playing games. I've verified that the issue is effecting every device in my home, not just my computer.

I've called into Xfinity tech support 9 times now, and they have sent 5 techs out to 'repair' my lines. Each time they come, they fix something that the previous tech has done, or they open a ticket for an engineer to adjust the signal at the amp. This does not resolve my issue as I still deal with random bouts of high packet loss. The last time they came they fixed the downstream signal coming into my house, it was at -23, now it's at -3. This did not fix the packet loss issue however it did restore my internet which had been down for a day prior.  They have replaced the lines into my house and verified each line going into my modem, and I'm not sure what else can be checked at my house as each line/connector has been checked twice.

I have a SB33 Arris Modem, connected to a ASUS RT-AX86S. My computer is connected to an ethernet cable to the router.

Any help would be appreciated as I don't know how to explain this issue further to Xfinity's tech support. They won't believe that I have high packet loss when I call in as they can still see my modem, and it's very frustrating to deal with.  I've tried to call in when I'm experiencing high packet loss to help troubleshooting and 2 out of 9 of the times I've called in they have also seen issues on their end.  They then escalate the issue to an engineering team and say it will be fixed, but it never is.  Here is the ticket # for one  issue: [Edited: "Personal Information"]

Thanks,

Collin [Edited: "Personal Information"]