So i've been experiencing the exact same issue that all of you have described, with clear packet loss and the rubber banding occurring. The game is unplayable in it's current state, and we have not received a reply from square-enix despite this thread being over 3 weeks old. My ISP is Verizon FIOS, and I am in the Eastern Maryland/D.C. area. I have a 75 Mbps download speed, and 35 Mbps Upload speed. There are no issues with any other game. Fix it, or forfeit my sub.