for one, their login lobby has never been stable since the game launch, there's always a chance to get the 'unable to retrieve JP or NA/EU server list', or worse, 2002, even when the lobby server is 'working normally'
and today the server-side slow down happens from time to time, but I found it seem to be session-based i.e. if I don't get server-side lag at login, I won't get it for that login-session, but if I do, then that session is doomed.
I was switching between mules so I'm rather certain that's indeed the case, as I could have one session completely normal, and the next very bad server-side lag and eventually 90000(or even 10102 if it's too lag to load the initial location from lobby), and then the next completely normal again.
wondering if this is caused by server over-capacity