So cruiser gatling solaris, the heavy slot solaris, turns particularly slow and looks like it simply wouldn't track close-by snubcraft.
Not sure if it was intended or not, thought I'd dump a post anyway with a big question mark
EDIT: Not exactly a scientific experiment, but to traverse from one side of my screen in third person, to the other, it takes 5 seconds. Less than a 180 deg traverse.
Might be the wrong stat but I believe I found your culprit. Doubly so with the nickname, might be that it was just never changed from razor traverse. /shrug