I am even more frustrated with spellcasting than I was pre-patch.

I am in support of being interrupted if you move while casting.

What I am not in support of is when this glitches and my spell cancels when I am (and have been) standing absolutely still and have not been hit by anything. Sometimes, my spell will fail and tell me that I've moved for no reason. I think this is a stutter in the connection between my computer and the server, thus resulting in the server thinking I've 'moved'.

This 'moving while casting' does not help animation lock... at least for me. I have to be running pretty early on for it to work, otherwise I will simply run a bit, finish my cast, then keep running. The difficulty of fights like Ifrit are identical to what they once were before (perhaps a bit harder if the 'not moving' interruption hits me).

I play on the east coast, and ever since I started doing endgame, I've plugged in directly to my modem to avoid as much lag as possible on my end. But my problem was never being able to run while casting. Theoretically, you could have 'interrupted' your spell before this new change by pressing that same spell button again (thus canceling it).

What I do have a problem with (and will continue to have a problem with) is animation lock. It drives me (and many people) absolutely insane. Animation lock is probably the cause of the majority of my deaths on any fight I do... Even if I try to time myself (and know the monster's patterns), the mix of the lag from the server and the inevitable animation lock will still hit me. For those who would say... "Too bad, you need to be timing your casts to go right off after an ability..." I answer this: What if something goes wrong and I can't do that for that one second? One animation lock can and will kill. That said, I have beaten those fights multiple times, so they don't make the fights impossible for me... just annoying.