Did LMGs get worse?

So I was super stoked on Season 3. I've played a few matches on Golmud this morning and... I didn't love my time on it, but I think that was less to do with the map and more to do with the fact that I seemed to be getting laser beamed by people with SMGs from distances that seemed to make no sense. A bigger map, with bigger distances, and now my LMGs (I tried a few) can't seem to hit fucking anything, but I'm getting turned to mincemeat by MP7s and P90s and whatever else from absurd ranges that I wouldn't think they'd be effective for.

On top of that, I really wish they'd do some thing (though I'm not sure what) about the constant left-right sidestepping people do where they just wiggle back and forth so you can't hit them precisely. It looks so silly and it's frustrating, it feels like a lame CoD trick.

Am I just imagining things? did I just have an off-day or did something actually change? Either way, it was frustrating enough that for the first time, ever, I wanted to stop playing. I can't say I've ever felt that before with BF6.