I actually didn't have much lag on Caspian, even on the 200 ping UK servers.. well not elastic banding type lag, I still couldn't hit crap except by accident (so switched to engineer and hunted tanks).
Interesting you say that Hemi, I started to notice that too, I'll have to focus on unlocking that instead of playing all 4 different classes each round, spreading my XP nicely out.
It's gonna take me forever to unlock everything
