In several helicopters or land vehicles, the aiming speed of the gunner position its really slow.
In example
Extreme slow
MH-60A (M134 and M240)
Mid slow;
MI-17 (UK-59)
AZU-469 T21
Y sensitivity higher than X sensitivity
M113
M163
AZU-469 DShKM
Ok
Loader m240 (M1A1)
Commander NSV (T72)