I tried this fix but the lag didnt get much better. What I have can't really be called lag as I can chat and interact with NPCs just fine. It's the movement that's causing all the problems. For the love of god! every time I press the left or right arrow it takes ages for my character to move. Can't even position it to climb up a ladder most of the times.
Lag is when you there is a delay in everything you do...interact with NPC, use Potion/skills, chat. It's not really lag when all is fine except you just can't move properly.
Did a lot of digging around and it seems this is a very very common problem among almost all players to some extent. I do hope they fix "Position lag" as the game seems promising!
Back to good old Maplestory for me it seems