Diablos is unplayable right now, and it only started post patch 2.2. It happens to myself and to a friend and we aren't even in the same geographic region. It's not ISP throttling unless SE changed the packets being sent to get blocked or caught by filter software. All other games and internet activity is fine, only FFXIV is affected.

I already cancelled my subscription, I can't play any of the new content so what's the point. I'll check in on my last day and if it isn't fixed, onto greener pastures.