It is an overall buff (confirmed) on turning speed, HP and aiming time for 85mm S-31M
KV-1S
- Turning speed 1st suspension KV-1S arr. 1942 changed from 28 to 35 deg/s
- Turning speed 2nd suspension KV-1S arr. 1943 changed from 30 to 38 deg/s
- Aiming time for the 85 mm S-31M gun for the KV-122 turret mod. 1944 changed from 2.5s to 2.1s
- Durability with the KV-1S turret changed from 920 to 1050 HP.
- Strength with the KV-122 turret mod. 1944 changed from 970 to 1100 units.
source – wotexpress
