Aaryonar is one of the hardest dragons in there. Dagarn the Destroyer or Lord Koi'Doken are going to be better solo targets. Maybe some of the triplets, too. But I forget which ones had real mechanics.
get a group or 2 to kill the first dragon then you and your buddies can drop, split up, and re get the task to solo or box the other dragons.
Killing raid mobs isn't about speed of kill, if you can kill it quickly it probably wasn't all that hard to begin with.
You can just DA/fade past Aary to go onto the other dragons. Fish dragon guy is a good solo target, would start there imo. Be sure to try Lord Vyemm too.
