Couldn't say, never used it much myself. Though nothing that i know have has directly affected that weapon.
I tend to favor melee, thrown grenades of assorted types, and rocket launchers. I find alot of the "mid-grade" heavy weapons like the light cannon and it like inefficient for there weight/size or TU usage. If i need to tackle a meaty target i want it go down as quickly as possible to minimize the number of reaction test possibilities from any nastyness said meaty is wielding.
Gals are unfortunately frail past the early game. Defense becomes more about minimizing the hospital stay/increasing time to bleed out, then actually preventing injury. A gal below 75% hp(without pain tolerance/immunity) will eventually die without attendance if a mission runs long for what ever reason. Even with attendance the sheer amount time spent shoving stun recovery items might as well put you down a gal anyway.
I don't have the play time to spend on finessing a single tactical map for an entire sitting. Nor is the game particularly forgiving. In fact if anything it has been getting increasingly more unforgiving for the past 8 months or so. I do enjoy the challenge but there much less margin for exploration/sub optimal play. What i use has been shaped accordingly. If it can't delete any target i might face in 2-3 shot/swings it not worth picking up, unless im intentionally going for captures.