Guild Wars 2

Engineer Turret Overcharges are also malfunctioning, particularly Rifle and Net turrets. These two turrets allege a +50% fire rate increase on their overcharge, but don’t deliver on it unless they’re overcharged immediately upon placement.
Otherwise, they continue firing at the same slow rate as before…although the Rifle Turret’s overcharge speed boost, if activated upon placement of the Turret, continues until it is removed from the field as long as it begins attacking during the overcharge, and the Net Turret’s Overcharge, if activated immediately after placement, seems to sometimes disable the Net Turret entirely.
The Rifle Turret Overcharge issue wherein it keeps the speed boost is one of the exploitable bugs.

The Net Turret Overcharge Fire Rate bug is still extant despite Net Turret being broken entirely and then resurrected. Just sayin’.