Logged into Cenarius tonight, all spell casting has 5 to 10 seconds of delay. Mobs/players are all standing running in the same place, and then teleporting to the next location.
Ping to the server is only around 30 to 40ms, that doesn’t seem to be the issue. My friend who was playing with me has the same issue as well. We’re at very different physical locations (LA and SF in California) and different ISPs. Highly doubt our individual home networks could be the issue.