Last week, there was a maintenance that created lag on the server where there was no lag before. It also buffed the loading screen boss to the point where certain zones were inaccessible, but that was mostly fixed within a day or two.
This lag has been bad for me, and I was ok with it knowing that it would be dealt to most likely in the next week's maintenance. However there was no maintenance this week, and the lag persists. I'm not unfamiliar with lag, I deal with a 230-250 ping all the time, it's normal for me as a player in New Zealand. This lag is something more though, it feels as though my inputs are being ignored. I can't weapon swap effectively, I can't cast a series of abilities without one or two being skipped completely. If I need to block for a mechanic, it doesn't register I'm blocking fast enough.
I spent all of last week achievement hunting to alleviate the lag problem by not getting too involved in the pve content I normally do. Today I wanted to get Maelstrom done on a couple characters, but I found myself dying repeatedly on Arena 2 not being able to cast my abilities or weapon swap fluidly.
Sorry for this long rant, but I really would appreciate it if I knew that this is something Zenimax is aware of, and are planning on fixing soon.