Massive Packet Loss Spikes after recent network maintenance

I have noticed recently that after some work was done by Xfinity in my area, I will experience massive packet loss spikes and ping spikes while playing games every 5 minutes or so. It's sometimes so severe that I am disconnected from my game. I have tried many different troubleshooting techniques. I tried turning off all devices, and then tested each one individually to try and rule out that 1 device is causing visible congestion for all of them, I got ping spikes showing up regardless ruling out 1 device having a virus or something. Ran virus scans on them all as well just to be extra clean and nothing found. Tried updating my wifi drivers and that did nothing too. 

Did this recent maintenance cause issues? I haven't experienced this before. What should I do?