Is this cause from hacks, or does NS require more bandwith for some reason?
NS hacks? What are these? Hackers are almost instantly removed from the community...
NS may require a bit more bandwith because it's more detailed and uses more things like particle systems and detailed player models and such. It can be laggy in big battles, it likes to cl_FlushEntityPacket me in big battles.
ZombieLoffe, you realise you're up against the largest unofficial HL mod community here?