Revert the layer changes ASAP

[Lyanth-maladath]

Here you go, 27 days ago:

@Aggrend-1483

One common suggestion we get is to “just add more layers”, and it’s very important to understand that layers do not add in any way to capacity. Layers are a Classic-specific solution to alleviate congestion in the game world in densely populated areas. The way they work is that when a certain threshold of players congregates in a small area in the game (say, in Blackrock Mountain) the service will spin up another entire copy of the game world to try to load-balance any new players that log in. This is to prevent a situation where large numbers of players congregating, casting spells, sending server messages and updates to one another causes a severe degradation of the entire service/game world. This functions in some contrast to the “sharding” system that modern World of Warcraft uses which basically does the same thing but spins up additional shards on a per-zone or per-area basis.