A few hotfixes have gone live regarding the Archimonde encounter, lowering the randomness that seems to plague the fight:

The following hotfix changes are now live:
- Archimonde now casts fear in a bit more consistent manner, roughly every 40 seconds.
- Fear's cast time is now 1.5 seconds.
- Grip of the Legion now has only a 60 yard range.
- Red Soul Charge now only silences players for 4 seconds.

Another planned fix to the timing of Essence of Desire's Spirit Shock and Rune Shield abilities should be going live sometime in the near future as well.