Packet loss

This is an ongoing issue for more than a year now. Xfinity support keeps telling that everything works perfectly fine. 
I had to buy a new modem, ethernet cables. I even had to take my PC to my friend’s place to test and make sure everything on my end works perfectly fine.

I have spent so much time to fix this issue and can possibly qualify as a network engineer myself.

I have done a pingplotter test to Valve’s server and found that there are packeloss on Comcast’s servers on hops beyond Hop 4. On my the most recent test. It showed 34.9% loss on hops beyond Hop 8 (

http://ashbum.va.ibone.comcast.net). Unfortunately, even after telling that the support keeps sending a tech to my home address instead of fixing their servers