The aoe dodging is always going to be dodgy (excuse the pun) because of the server tick lag - you basically learn that you have to be out of most indicators a good few ticks before they disappear or you'll still count as being in them and get hit (larboard/starboard is a good example in O11n - if you're still on the side when the indicator shows, you will get hit, there's no buts about it.) Combine that with the fact that XIV has been under massive DDOS/server lag the past week or two, and that's very likely the cause of the issues you're dealing with right now, for the casting as well.