If you have any problems using the updater, you can manually download and apply all the patches to configure the game as you prefer.
PvP Mode: Recommended to enable during sieges, epics and any other big pvp events as it helps to increase the performance/fps. It will disable OL animations, and Soulshot/Spiritshot animations.
Display Drop/Spoil data: Download this patch if want to see the description of the drops and spoil that gives each mob within the game, while targeting them.
System System Messages: Use the colourful one if you like to have highlighted messages in different colours.
Decrease Background Performance: Useful for people that are often alt-tabbing, to have a smoother switch back and forth to the game.
Display Skill Cooldown Percentage:
Engine.ddl: In some isolated cases the game does not start on Windows 10 operating system. If you are experiencing issues opening the game and use windows 10, you can give it a go.
Assigned RAM: The 4gb options allow the l2.exe process to use up to 4GB instead of 2GB. Performance impact is not really high as per our tests and also worths mentioning that the 4GB exe file may be tagged as virus by your antivirus and the file deleted. Anyway, if you pc has good specs we would to try it.