The common advice here when members switch over to new equipment is to give it sufficient time to completely familiarise oneself.
I'm trying to say, FZD ALC is not new equipment at all. Yes, there could be a placebo effect but I assume pro's don't mind it. All players have downs and ups, some could be related with equipment but not the case for FZD IMO.
Knee injury > frustration > too much training + tournament > body/health condition issues > personal/family issues > pressure of being WR.1 > Ball change > temperature > humid in air > foods he ate recently > etc etc >>>>>> Viscaria to FZD ALC