If you are having lots of lag try the fix below. I can't guarantee it will work 100% however most of the time it does work. The fix adds a entry to your registry to increase how quickly your computer sends acknowledgement requests to the server.
Run the Latency_Fix.exe
Click on install, then restart your computer.
Now login to L2Shrine and see if it has helped the lag.
If you find the fix hasn't worked for you and you want to remove it run the Latency_Fix.exe again and click on remove, then restart the computer.
Download: (The .zip file is inside the fol