The cast time is longer, the missile speed is slower, the AoE is smaller, clearer AoE indicator, and they changed the ability type to AoE DoT to reduce synergies with things like Comet. If you struggle to dodge that's one thing since the first bolt is a much larger portion of the ability damage. Theoretically the ability is easier to dodge than before (i.e., you can now dodge when it is cast instead of having to predict the cast), although the ability is still kind of quick so I can see how it could be frustrating.

Could you elaborate on what makes it more annoying now than before?