So I've been practicing the Jenova Life Aqualung backup strat on PS4 and I don't think the time bars are filling up properly. I know that you're supposed to Big Guard with Cid after using a Phoenix Down with Cloud to revive Tifa. The problem I'm having is Cloud and Tifa's ATB gauges don't fill before the Big Guard animation is done so I can't use Cross-Slash before Jenova gets a turn.

Is this a PS4-only problem? Do my characters have a lower Dexterity stat than their supposed to? Any help would be greatly appreciated.