This has been going on since last week with users having connection issues to WoW.
Using the Blizzard looking glass tool I can see high latency on one of the Fios hops. For me it is :
ae203-0.CMDNNJ-VFTTP-325.verizon-gni.net (100.41.3.251) 62.759 ms 62.758 ms 62.813 ms
https://us-looking-glass.battle.net/
Fios please investigate!