Can't see NPCs and 99% of players

as title says, i can't almost anyhting, i can see some NPCs and that depends on the area and players most of them i dont see even after unstucking, reloging, idk what to try anymore...
Any1 have some kind of solution?

Edit: While i am in Stormwind its fine, when i step out in Elwyn for example every1 disappear.

i have answered this a few times already, search....

"get summoned to ToT/isle of thunder, and die or enter raid there and die"