One week before put Lindvior come, GameGuard receive significant changes like "hide" l2 in tasks of operational system (and some people have problem in this week). After Lindvior they solve GameGuard problems and the process l2.bin back to process manager.
Since this modifications come, the game have too much lags. When I launch game the loading process of game guard use a lot of reads on hard disk and game launch need at least 3x more time to run.
The client side limitation 3 clients in each computer already bypassed by bots (easy to bypass) and if the limitation are the "solution" to not hire more game masters and improve game performance, the current solution is fail.
The support system against bots still not working, big bots still boting.
People who don't want bot in this game have huge CPU load due to our obsolete gameguard.
I remember a long time ago during an update in C3 the staff was disabled GameGuard due to several problems. If possible, consider disable game guard for one week and create a poll for people answer:
"Without game guard the game receive a boost in performance? Yes/No"
"Fail english like our great gameguard"