Yeah, just to add on to that, it could be packet loss from this, that is causing these issues, as this occurred a while ago with the french community where many users were not able to connect, getting disconnects frequently, some not loading, server database loading (Of profiles and FL and gifts etc..) and was the reason the EU Proxy connection was created, to redirect the traffic to the main server to avoid any possible break points between your home and the US server.
I have had these issues myself from time to time and when I do trace routes, I can detect where abouts in the world a server is either not responding or running extremely slow, causing packet loss, which then results in a hindered connection to the game server, but then everything else works fine on the net, like YouTube, Facebook, Twitter, etc.
Let me know about this if using a VPN fixes your issues. As I have seen it fix some users issues in the past and has fixed my issues from time to time.
Any other possible solutions or theories to this are highly appreciated!