All you ever hear is how brain dead easy this class is, and while the skill set is pretty straight forward I find myself having slow reaction times when it comes to deciding whether to cast either Jolt, Impact, Verstone or Veraereo.

What can I do to improve reaction times?

I'm only i313 with verity weap and can barely keep up 3900 dps on SSS Susano. Am I just undergeared? Or just lack experience? What are pro RDMs doing that I'm not?