@Hime @Juji
So there is definitely less issues with DOS disconnecting since the update, however there is still issues with lag, it does at this early stage seem less than before, but it is weird. Of the 3 characters I have logged in, 1 or 2 could have absolutely zero lag, and the other one (In same party, same area) be completely locked up.
Hope this helps your investigation in fixing the servers, perhaps look at the players *cough* scripting *cough* to cause server disruption during pvp. *cough* nova *cough*.