SAM is by and large the most awkward job to play in PvP. I feel like cast times on a melee are somewhat sensible in PvE, given that your opposition is fixed in place.

However, in PvP, the flow of the opposition is fluid. As a SAM, you will routinely find your cast abilities washing out as the enemy has scooted outside of your little 8 yalm cast. This is more egregious in FL/RW than CC, for what it's worth.

Also, even starting to main SAM now, I still fundamentally disagree with all 1HKO's in any moderately competitive environment. They are the definition of corny.