Terrain loading

Hey, can you help to solve this problem i ex. when you play real rotmg and go into a dungeon ex abbys you can't see whats further or behind a wal lwhen you walk further then it loads but on the pserver it loads whats behind the walls the mobs try to attack you thru walls you probably get what i mean. is there some kind of solution?

what i want:



current:

Wtf is it?

u mean blocked sight? xD