Originally Posted by
worldofneil
Ping and traceroutes are ICMP traffic (Internet Control Message Protocol), it's small amounts of data and it's only designed for relaying information about certain things, you can't send general traffic down it and as such ICMP is never altered (blocking certain ICMP protocols from working yes, but slowing down/changing/altering in other ways no - It either works or it doesn't).
The game itself, like most Internet traffic, is using TCP and UDP packets. I can see that you're repeatedly blaming SE, but like others have said above, this is 100% your Internet provider. SE don't control how your bandwidth is managed/limited, your Internet provider does.
I appreciate you've said you've spoken to your Internet provider and they've said they aren't doing any throttling so I'd recommend getting hold of the agreement for your Internet connection. Most likely somewhere in there there is a part about traffic shaping which is what this is falling under. They might not be specifically throttling your connection, but as part of their bigger traffic management it's doing that as part of your package.