New Shaw/Rogers Ignite WiFi Gateway (Gen 2) modem (XB7) installed a few days ago. New coax cabling. I was still with Shaw/Rogers before this but now I regret getting my equipment replaced because this was never an issue before. 

It's been a nightmare. Packet losses and high ping. They insist everything is fine but it's impossible to play any online games. 

To Blizzard servers:

https://share.pingplotter.com/DBrZxjrkgUY

https://share.pingplotter.com/ENKn6mJxjEQ