High ping issues no matter the server?

I have a buddy who seems to have 200+ ping no matter what he does. I have noticed personally if I am on an East Coast server and my opponent is east its harder to deny souls in lane (we are West Coast). But his experience is high ping no matter what server we get into. He has tried at multiple houses as well so it's not just his network or his ISP it's something in the client that just causes a high MS response on every server. This is happening with him having 900 Mbps down the internet with no packet loss. He has been playing for months and this has only started happening recently.

He does only get 8Mbps upload which I am not sure how valves server architecture works but maybe that's the cause.

Does anyone have a similar experience or any input? even if you don't have a solution we are just trying to find out the possible cause.