Since patch 1.4 there are some bugs significantly impacting arsenal mercenary DPS. Please aknowledge and address these bugs. They are impacting our ability to progress in HM TFB.
If you read through the forums, these have been noted multiple times.
1) dual weilding unload is broken and does not record hits from off hand weapon sometimes.
2) the barrage proc damage boost is intermittantly broken
3) tracer lock buff stacks are intermittantly broken as far as boosting damage to rail shot
4) the 4-piece PvE set bonus reducing the heat generation of rail shot only works some of the time.
Fixing these bugs is critical to enjoyment of the game to those of us into progression raiding. Please undo whatever broke mercenaries in 1.4 or roll back the coding affecting mercenary dps.