I'm another FiOS user from Washington D.C. who is having similar issues discussed this in this thread. I get a 1-2 lag spike occasionally while I play on the Hyperion server. I came from the Gungnir server (which is JP) and didn't have the spikes, but had delay in duty instances. Overall it is unplayable in my opinion and I am about the cancel the subscription if Square Enix doesn't respond to this incident.