I'm not sure why, but I've never lagged so hard in an MMO.. or any game for that matter, as soon as other players show up... I get about a 4-5 second delay lmao Doesn't happen anywhere else. Only PvP. PvP is the only place I lag. and I lag for a good 5 mins straight at the start which is super helpful.

Now, considering you are able to turn off everyone elses battle animations in PvE.. where there are a lot less people spamming all their buttons as fast as they can.. yet not in PvP when it's literally 60+ people in a small area going HAM.
Makes perfect sense.

Lower the lag in areas where there is none and remove the way to reduce lag in the ONE game mode that actually needs it.

Feels like Blizzard planning.