Most of my Aby NM experience on COR is waiting for proc then going all out once yellow proc'd and red has terrorized. Doesn't make for ideal slow steady QD damage. Much of the time is spent intentionally not damaging the mob so it doesn't die before yellow or red proc. If your LS lets you QD during that phase of the fight that's fine. Mine doesn't. Of course some of the big baddies in Abyssea its OK to keep going with QD. But Seal mobs, +2 NM's in Visions and Heroes zones and empy drop mobs for 80-85 are too squishy to lay the hurt on before proc's are in.