Xfinity - Ping and Packet Loss are Insanely High Last 2-3 Weeks

The past 2-3 weeks for me have been a nightmare with Xfinity internet in metro Atlanta. 
My ping is x2-5 higher and my packet loss is absurd. Competitive play is certainly out of the question, but it's so bad I cannot even play anything casually. 
Oddly enough my speeds are stable and where they should be. (Tested that myself but literally the full extent of "testing" Xfinity has also done). 

Xfinity has come out to my house 3 times in the last 7 days and done a lot of nothing.
I replaced EVERYTHING and thoroughly tested everything. 
They changed the main. I ran the new coax through the house properly. I bought all brand new modem, router, ethernet cables, outlet, and quality coax in the wall and running from the outlet to my modem costing me hundreds of dollars of my own money just to rule out issues with my network. I also extensively tested all of my router settings and tested bypassing my modem as well.  
To further, using ping programs I have trace routes showing that my network is NOT an issue. 

They keep sending people out that don't even know what a node is. They told me about "higher level techs", but I damn sure haven't seen one. 
They don't understand or know how to read trace routes and the significant evidence I have provided proving to them that the issue is on their end, not mine. They swear it's not them though but can't read network data. 

I have been with Xfinity for 12 years now (8 years in my wife's name and nearly 4 in mine). I started looking for a new provider today as I'm extremely unsatisfied with the technical support and the technicians they send out. They offered to send a tech out and told me they'd charge me $100 if the issue was on my end. Last week they "found" the issue on my end when they thought my old modem was supposed to be my new one and hooked it back, deactivated my new one, and reactivated the old one. Not even to Beavis and Butt-Head's surprise it did literally nothing. 
I'm frustrated and at a loss of words at this point.