From OpenKore Wiki
- clientSight [<number>]
- If this option is set, Kore will ignore actors (e.g. monsters, NPCs, players...) whose distance from you is greater than or equal to the specified number of blocks. If not specified, Openkore assumes a default value of 15.
- Note. Some private servers will send actor packets at a ridiculous distance that the normal RO Client can't display, and use this for automated banning. This config option will make Kore ignore those actors and hopefully avoid auto-bans.