Yes there has been a lot of threads about it and ZoS said they are looking to fix it.
However, we haven't heard anything recently which is way many believe the changes to animation prioritization are here to stay I guess. Same as movement speed which has been reduced for months and they said they'd fix.
Not just PVP. DB's Gold Coast was super laggy. I kept missing the NPCs because of the lag. Almost died a couple of times because they were hitting me, but I was hitting air or the wall.
It's the lag and overall poor performance, OP. It's not just PVP either. I was helping a buddy of mine grind champion points yesterday, and inputs were coming out delayed beyond belief. In addition to sometimes not responding at all. Bar swaps were a mess as well, as many times it just wouldn't occur.