Crygil has posted an update on the instance creation issues that have been plaguing many World of Warcraft players. According to the post, "the limit on active instances was originally implemented as an interim solution to ensure that all active instances perform smoothly." This fact has previously been stated by Blizzard, but Crygil goes on to let us know the team has optimized its infrastructure to better handle the instance load on more than 40 percent of North American servers so far.

Performing these upgrades "requires fairly complex coordination with third party affiliates," which is why it will take time to complete this work on all realms. Crygil estimates the optimization efforts should be completed for all servers in the coming weeks. Keep reading below for a list of the servers that have been optimized. Realms on this list should see noticeable improvements as far as instance creation is concerned.

Aegwynn
Akama
Aman'Thul
Arathor
Area 52
Auchindoun
Azjol-Nerub
Azuremyst
Barthilas
Blackrock
Blade's Edge
Blood Furnace
Bloodscalp
Bonechewer
Boulderfist
Bronzebeard
Caelestrasz
Chromaggus
Coilfang
Crushridge
Daggerspine
Darkspear
Dath'Remar
Dawnbringer
Draenor
Dragonblight
Dragonmaw
Draka
Drak'thul
Dreadmaul
Dunemaul
Eitrigg
Eldre'Thalas
Exodar
Feathermoon
Firetree
Fizzcrank
Frostmane
Frostmourne
Frostwolf
Galakrond
Garithos
Ghostlands
Grizzly Hills
Gundrak
Gurubashi
Hakkar
Jubei'Thos
Khaz Modan
Khaz'goroth
Kil'jaeden
Kilrogg
Korgath
Kul Tiras
Malorne
Mug'thol
Muradin
Nagrand
Nathrezim
Ner'zhul
Perenolde
Proudmoore
Rexxar
Runetotem
Saurfang
Scarlet Crusade
Sen'jin
Shadow Council
Shadowsong
Shattered Halls
Silver Hand
Silvermoon
Skywall
Smolderthorn
Spirestone
Stonemaul
Stormscale
Suramar
Terenas
Terokkar
Thaurissan
The Scryers
The Underbog
Thorium Brotherhood
Tichondrius
Uldum
Vek'nilash
Velen
Windrunner
Zangarmarsh