Upload Latency causing constant internet drops

Hello, I have been working with this for a while. I have researched EVERYTHING possible, done everything I could do on my end, but to no avail.

For the past month and a half, my upload latency has spiked beyond 1000+, dropping me from whatever games I am playing, show I am watching, or service I am using.

Things I have done on my end.

Disabled IPV6 - Yes, changed nothing for stable connectivity.
Disabled 5ghz Band - Yes, changed nothing for stable connectivity.
Called Xfinity and had a tech come replace wiring and router - Yes, changed nothing.
Disabled all VPNs - Yes, changed nothing.
Restarted, Reconnected, Reloaded, Updated EVERY device used on my internet - Yes, changed nothing.
Use Ethernet cable to computer, TV, etc. - Yes, changed nothing.
Updated all drivers - Yes, changed nothing.

Changed DNS servers - Yes, changed nothing

This is my "Gig internet" plan, tested while writing this post.

At this point, there is nothing I can do on my end. My internet connection drops every 15-30 minutes. I can recieve data until my packets wont send to request them, dropping my connection entirely.

I am at a complete loss. I'm already working on switching ISPs at this point. This is my last-ditch effort to keep Xfinity.