Their are probably the most annoying used weapon by the enemy. All you hear is a quick charge before you're shot. A pack of enemies with those is just brutal to go up against. They fire way too quickly and deal a considerable damage for each shot. You can barely dodge it with max agility or even max armor.
I suggest that a reasonable change should be an increased charge time between shots to compensate for their high dps or a nerf to the damage.
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Focus on them first instead of leaving them. I don't have a problem with them anymore. Although I do remember Archon Priest nightfall pre-cheese. *shudder*