Hmm, im from eastern europe(Croatia/Balkan:P) and i dont have problems with lag, its ussualy about 30-50 ms, but thats good :P So i dunno whats causing this for some :P
what would u get with a sub ? what if it is sub game there is no bugs, exploits, stupid people and similar ? its the same just f2p is better :) game will probably get better in time, its still young :) its nice f2p model cuz u can do everything for free, faster if u like the game and pay some, which u dont need :P