Basically before i formatted my laptop, arma played ok, except for the game used to close randomly for no reason, it was annoying, but it was ok to deal with, however since my new install all arma does is lag, my ping is ok, even when i am playing an online game against bots, they are sliding all over the server as am i, playing against other players is near impossible, non of the other players notice as i am such a bad player at the best of times lol, but this lag problem is making the game to not be as fun as it should be

Intel(R) Core(TM) i5 CPU
M 430 @ 2.27GHz
4GB RAM
64 bit
Windows 7 Professional - service pack 1
ATI Mobility Radeon HD 5470