You obviously haven't played battlefield... These maps are tiny. Hopefully the lag gets a bit more evened out. Can't count how many times on the kill came I was just standing there when i had been sprinting from one cover to the next, or just poped out real fast.
Game looks solid, and when lag isn't an issue plays great. Sure the lag will get better it always does. BF3 had the same issues, and two weeks later I see next to no noticable lag in it anymore.
Maps are to small, not sure why they even included sniper rifles in this game at this rate.