2.5 lag spikes

Ever since 2.5 came out dungeon wait are broken in side dungeons it lags so badly it making game play unplayable outside dungeons just doing weekly daily quests fate farming everything lagging at worse. If I pull up my gather list on menu half of it freezes up over the lag after 2.5 came out. So what are these hot fixes really doing because it ain't fixing nothing at all. ( it's not my connection because I'm running tests on it during playing game and everything at 100% so don't pull it's your connection it aint)