Board Thread:Questions and Answers/@comment-98.202.188.196-20150415220435/@comment-112.209.50.170-20150416022710

Elemental buffs aren't necessary for a strong team. I've seen teams relying on spark and crit and atk buffs and completely dominating the bosses regardless of element :). Keep the same team setup but change Magress to Kira.

Optional: Change Darvanshel to Shera if you want more dps :D

Optional: Change Exvehl to Lario  if you have a friend that can negate stat ailments

Tip: Time your sparks well to maximize dmg :D

And for the boss lag problem just move to other areas after you kill it and wait for the notification. I'd say give it two to three minutes to update.