Please follow these steps, they helped me to be able to play Combat Arms after the new patch. I've tried reinstalling the full game client, manually updating hackshield, running as administrator, and changing the compatibility, but to no luck. This method however worked perfectly for me, thanks to my friend who helped me out because he was having similar problems.
Why you most likely lag:
Your computer is garbage.
How to fix CA:
Throw your computer out the window, buy new one.
Very insightful post.
How else to fix CA?
Stop playing it, don't install update, let's fucking get some cracked servers n shit so we can play without Nexon's ubergayness and mod the game up.
Infamously know with the nickname [myg0t]g0d Founder of myg0t in 1996
My IRC Chan atm is: irc.swiftirc.net #g0tmil
linked to 4 networks and growing including MPGH! Combat Arms player CBL CLEAN
Help me grow!1