Overview
AUG is an AR that has always suffered from constant random retargeting during her skill, which prevents her from consistently eliminating threatening enemies. Because of this, she has never really been recommended for use, even though her actual damage output is quite high with her Login SPEQ.
Most of this remains true with her SPEQ-set, although her DPS is even higher due to the improved uptime and SPEQ stats. With all of her buffs active, she is actually one of the highest-DPS ARs in game, though this is hard to do without Type64 (Set) or P90 (Login SPEQ), as most enemy teams do not have enough units to activate all buffs.
If consistent targeting is not necessary and you can bring Type64 Set, AUG is usable, but beware the extremely RNG-heavy nature of her targeting.