I_QQ_4_U, on Jan 15 2021 - 13:05, said:
It actually doesn't really improve bloom on hull or turret rotation, it might while moving if you don't turn the turret or hull. It's kind of a wash, because when your hull and turret rotate faster it cause worse bloom, which is offset by the bloom reduction. So it's really a mobility enhancer more than accuracy. That's why it's really good on SPG's or TD's even if they don't need the mobility buff since they are often just aiming at one spot and not moving. That's why Vstabs is still better on tanks that don't need the traverse buff.
It only makes you rotate faster when you TELL your tank to rotate faster, AKA when you're turning full speed. If you're making micro adjustments in sniper mode the second before firing, the gun traverses at the rate of your mouse. IRM also helps when driving straight and after firing, which aren't offset at all by the same peice of equipment. It literally has the same effect as V Stab but reduced.
For an exaggerated demonstration, try this on the Super Pershing or T+34-85M (both are held back by poor terrain resistance).
Setup 1)
V. Stabilizer & Grousers & IRM
vs
Setup 2)
Vents, GLD, Improved Aiming Unit
These builds are short on view range, but they will really demonstrate the difference. The Grousers will improve hull rotation by more than 20% (if in mobility slot)(I believe) since it increases both listed rotation rate as well as terrain resistance, which combined together and with horsepower to stock horsepower ratio, determine the actual traverse speed on each type of terrain. This means that when rotating the hull, the accuracy increase of V. Stab. will be offset.