I don't see how they can possibly do anything about this issue because it's a server architecture issue. I don't know of another MMORPG where you can actually move before your spell is supposed to be finished casting and still finish casting it. It affects some players less depending on their skills and whether they need to stand still or not. The only way to get around it is by playing extremely conservatively and clear AE by a very comfortable margin. In EQ1, you do not come to a complete stop the moment you stop moving so people adapt the 'spin 180 degree' rule, that is after you think you've stopped, spin around 180 degrees and that's enough time to ensure your momentum is now 0. It's similar to this in FF14 as you basically have to be able to spin around 180 degrees after you get out of an AE before it's done casting to be sure you actually beat the AE.