After emptying clips into enemies for a while with the Enhanced Light Damage Modifier, which gives 5.0% damage bonus, I finally got the SP required to get the Complex Light Damage Modifier, which gives 10.0% damage bonus. After two matches, I found that the 10.0% bonus functioned exactly the same as the 5.0% damage bonus. I was expecting a one-shot kill, but it doesn't work. I'm using sniper rifles and I tried various different sniper rifles and they all behaved just like when the 5.0% Damage Modifier was equipped. So is it broken? Don't tell me the game is broken, I just want to know if this certain item is broken. Thanks.

God hates you.

It's a very small increase in damage, are you sure you didn't benefit?
Especially with sniper rifles, the bonus of a damage mod may go unnoticed until once or twice where it totally saves your arse.

They're useless unless stacked, still useless while stacked because shields are better.

Depends on what weapons you are using it on. If you are using then on an SMG, or something, you won't see much of a difference. It's, what, 1-2 more damage? But, if you use it with the Scrambler Rifle, you can get a big damage boost. Especially if you are stacking them. I stack 2 enchanced on a proto fitting and do, almost, 90 damage per shot. That's without the damage boost from skills and whatnot. With those it's closer to 100.

Snipers benefit huge from it. I mean, the Thale(officer weapon) has 355 damage. 10% increase to 390. If you are using a heavier suit, you can get well over 400+ per shot if you stack them. Which is CRAZY, son. They can be useful, just depends on what weapons you are using.