Profile of BlitzBorne

So... it started a few days ago. The day the winter patch preview was released.

It took a ridiculously long time to load the game (get to the menu), probably 3x longer than what it usually takes. Anyway, I get to the menu. The menu is lagging. I don't think anything of it. I head over to automatch. I'm the last to load. I'm 30%~ loaded when everyone else is at 100%. I don't think much of it. In game, I'm lagging atrociously. It isn't just input lag. Its as if I'm running the game on a toaster from the 70's.

I quit, and check my settings. Nothing changed. I'd played over 300 hrs with those settings without any issues!
So, I lower my settings and go in to the campaign. Same problem. Lag all over.

Have tried: verifying intergrity and reinstalling

Google brought me to this thread: http://steamcommunity.com/app/231430/discussions/3/35219681735658931/
Seems like a number of people have had this issue, but there isn't any clear solution.
(the steamcommunity discussion mentioned the energy options of windows, but that isn't my problem either)

forum people help pls

EDIT: My PC runs higher end games (e.g. The Witcher 3) just fine, so - no problem with drivers or hardware.
EDIT 2: My internet connection is good too... not on wifi, actually plugged in

I was thinking either Partisan Tactics, Tank Hunter or Shock Army. Any thoughts? *I'm really just looking for suggestions as to which commander I should get, since I almost have the supply fund to do it*

MODE: 3v3/4v4