Mine took about a week to stop being spastic. How strong is your current? Mine never truly settled down though until I added a very strong current in the tank (4000 gph. Yes, 4-0-0-0). In my experience, it's normal for the fish to want to swim into the current without doing much beside eating and beating up his tankmates. Good dithers will either help him calm down or get eaten. Either way, they help him lol.
How long have you had him? How active is the room in which he is housed? We need more details homey! Water perims, lighting, feeding, length of ownership, activity in the room, ect. Tell us anything, and I do mean anything, that may be relevant to the tank or the room in which it's stored. There's too many factors to just give a flat answer such as 'they stop the atf spaz after 96 hours'... lol