The weapons were originally designed to be at right angles and to have 120-degree arcs, i.e. nothing on the broadsides faced fully forwards.
To be remotely efficient, it would have to do circling behavior, not a face-forwards-then-twist behavior, which is what it occasionally tried to do. This is an edge-case thing, because, in theory, it can do "more damage" by facing the target at an angle, but this screws up the ship's manuevers and makes it waste delta-v, making it considerably less efficient in chasing fights, whereas if it circled, it would not be able to kite, but any enemy entering the circle faces the maximum possible number of guns.
Anyhow, I fixed it the same way I fixed the Conquest, by allowing the arcs to reach full forwards. Then it starts behaving efficiently, but it's twice as powerful as planned