124 ms should be perfectly fine and virtually unnoticeable. It sounds like you may have one of the ISPs that is throttling FFXIV as if it were P2P software so you're getting spikes as a result. That, or, as the previous poster said, there may be an issue at one of the "hops" the connection takes between you and the game servers. Every ISP routes connections differently so it isn't something SE can control directly. Honestly I think some ISPs need a kick in the head because I've seen hops that go halfway around the world the wrong way before reaching the destination. There's no reason it should take almost 20 hops to get from EU to the FFXIV game servers.