I agree, as i was a gunner in RL loooong time ago...
To say this ; there were 2 sorts of turrets, a electrical-one like the one in our SRV, that was very good and could turn fast but also turn slowly. These are the best-ones, then there were the hydraulic-ones, fast turning and more difficult to put on the spot you wanted.
There were also hand-turned turrets in the past, and every modern turret can still be hand-turned in case of failure.
Conclusion, the SRV turret feels like a hydraulic one.
There is also no telescoping sight on the turret, and the guns do not shoot far @ all, that while we with our 7.62 coax could reach 1000m...go figure !