Well as many others I am facing lag issue's, but in SP not MP that much in the helicopter mission i get 22 fps and it has random frame drops and such, as well as the infantry i tried to use the method of adding your cpu core count and that stuff no improvement what so ever. As I know it is in alpha I am wondering as patches go along will there be optimizations for the game? I meet the recommended requirements.
SYSTEM
CPU: AMD FX-6300 @ 3.5 Ghz
GPU: ASUS 7850 2gb DDR5 @ 860mhz
HDD: 1tb seagate @ 7200rpm
RAM: G.SKILL 8gb
In bf3 I run all high I get at least over 60 fps and romp as low as 40 in 60+ matches.