Lag / Wrong position of the target

Everyone has this problem, it's a server-side issue that came with the new core. On the old core we did not have this problem at all and the server was very smooth for pvp. The devs are well aware of the problem, but it seems that there is no obvious fix for it yet. 

The only thing you can do is be more proactive. Always assume the target is two steps ahead of you, and play accordingly.