What if this has to do with the PS4 itself and not the servers? Maybe there's a problem with Sony's system not being able to retrieve data from the data centers, thus making the PS4 game lag for the NA data centers? Just a thought. It could be something with how the PS4 is reading the data. That's what I have seen a lot of PS4 players have been saying. I'm on the East Coast and I'm on the PC, so I did not get any lag. I did a dungeon run and also WoD and I did not have any issues.