Attack Speed Reference

The limit to speed 2 may be a new thing, I believe the Wizet Briefcase is already speed 2 so if anything, BW booster should tell you whether that item changes speed at all.

It is a weapon speed 2 and booster does absolutely nothing to it.

I think I might give Spell Booster + Heal a shot after polearm/spear Final Attack, since that's the only thing that might potentially yield a sub-600ms attack (other than Final Attack/Hurricane which don't quite count).

EDIT: Well, it does. Spell Booster +1 = 570ms Heal. Spell Booster +2 = 540ms Heal. Doesn't seem to affect how quickly damage displays, though, so perhaps that person was right.