I personally don't think the lag is a gfx problem. Even playing the demo i noticed that like 4k men on the battlefield standing still is rendering without much problems on the highest settings on my higher mid range pc, but when they're moving or fighting the game turned into a slide show. Which to me suggest that it's a cpu problem (probably what they announced as individual soldier ai straining your cpu, or pathfinding or unit cohesion). That coupled with obviously sloppy network protocols and multiplayer optimization code, would cause the lag. I have to admit that i don't know if the lag persists in lan battles.

I'm fairly sure it's not graphics lag, but either cpu or networking protocols lag. Which is just plain wrong of CA to release a game in such a state. CA can come and prove me wrong in this any time, but it's not your hardware that's causing lag, it's bad programming.