Stim for dmg/movement speed also does nothing, it shows the buff being applied but it doesn't do anything at all. They also nerfed the ever living hell out of the duration.
The Booster Hive description incorrectly states that it grants the player increased movement speed and a cool down reduction. The reworked Booster Hive grants increased weapon damage and weapon handling.
We mention this in the Known-Issues list but obviously want to fix this as soon as wecan.