depends on how many people are in there. better to manual/aab when there's less because less lag/crashing. I almost never join/host any rag raids just because I can't take the amount of lag. they'd probably already been aabing, and most skill CD are different so seems like they're going faster than your initial first turn. personally i'd aab the first turn to use all debuffs/buffs/etc and then just auto the rest unless it's a union only battle.