As we know, the perk was changed to affect the bullet impact values in pve, as with desperado. Sounds fine in theory but it doesn't work in practice. Right now in pve, breakneck actually deals increasingly less damage per shot as you stack rampage and onslaught. Yes even with rampage active, you deal less damage per shot because of onslaught. This makes the weapon feels very ineffective in pve, as the perk is negatively impacting the performance of the weapon. Hopefully the dev team can look into this and consider reversing the changes to the perk.