Ability/Loot Lag despite normal FPS and Latency
There is an ongoing issue with shard stability during times when the game population is high. Most frequently, this error will happen in Battle for Azeroth zones, or other places with recent world quests active (such as Warfronts). While there is no fix you can perform on your end, some players report that swapping between War Mode and Normal Mode can temporarily fix the issue, as it will place you in another shard which may be more stable. We understand that this is not an ideal solution, but it’s the most effective step we have available at this time.
We are actively working on fixing this problem with incremental improvements through game patches. Ion Hazzikostas addressed this topic in a WoW Q&A video.
If you are having this problem, please contribute to the thread for your region below: