Yeah, Arvenald can pretty much be trusted to get the orbs near him(be sure to watch in case he misses one, but hes mostly fine) so you only need to worry about the other 1/2-2/3 of the field. Couple more things. The move you use to clear the orbs is an aoe, so you can still get them from behind if youre close enough(and if i remember right you can use it while moving, so you dont need to stop either). If triggering the duty action on the fly is giving you trouble you can assign it to your hotbar. And finally, you dont really need to be worrying about damage in the first phase of the fight. Put the orbs above everything else. Youll know when youve made it to the part of the fight where damage matters. If the framerate issue is really bad, consider turning down spell effects or some other graphical settings just for this fight(unless im mistaken, the aether and primal data centers are in more or less the same place so that shouldnt make a difference). And of course, if youre really getting frustrated a short break can be beneficial. You say "everything else is locked behind this", but unless im mistaken the only content currently behind that is one dungeon, one trial, and the most recent patches story content(and i guess one custom delivery client). So if you havent already done them, you should currently have access to 3 optional dungeons, the first 2 tiers of the Omega raid line(8 stages), and the first alliance raid of level 70. Hope this helps.