I can't offer any real input on the topic, besides the fact that I agree with Alcyon_Densetsu about casting and client-side issues.

What may be happening, that was recently brought it, is that SE is using some over-complicated system. Perhaps when you press the key, on the client, it defaults to start a cast. The client assumes the server is going to get the command, and it's "correct". However, the cast completion and time is brought on by the server. So, until the server tells the client, "No, you're moving. Cast canceled." So it checks 2 different things for a single cast? I may have worded this wrong, or said the example wrong, but what I mean is that for a single action it can be using both live-states.



That said, I love FFXIV. I don't want to doom-and-gloom, but after playing many other MMOs and not having this problem, it's really making me doubt my long-time subscription to FFXIV. This is what is stopping me, and my group, from killing Twintania. I don't like, or want, or rely on addons or timers. I never had to in Rift(up to HK/RotP), and I can say that some of those fights were objectionably "harder." Akylios, Grugonim, Matron Zamira, etc were all amazing fights. It's coming to a point where I'm going to use a timer because, during the second set of Divebombs, by the time you see the green circle above someone's head OR twintania to run, I would say ~70% of the time it's too late. You're going to get hit. Not to mention that, while the current strategy of stacking in the "hole" is legitimate, I doubt that is what the intended design of the encounter wanted you to do. It was a strategy developed out of necessity to actually beat the encounter, much like the old pre-nerf twister strat.