Its a Beta to first test the server stress... and its working, they are getting data about how it is realy shite atm so mission achieved. Dont play this yet unless you are fine with the fact it is an open beta stress test, its not official launch or even a fixed open beta yet, its a day 1 server stress test. Stop playing and wait if this bugs you.
It's only EN Candus that has real problems. NA server have some lags, but the others are fine.
Don't expect a character wipe / roll back accounts etc. In MMO that is almost never happens. ( Usually they just add more servers where you all start from zero)
So play now, don't wait for release day.
Don't worry, NA server was realy bad for lag and dc's as well all day, I am just saying that although its frustrating I myself understand that it is via this process that hopefully they can work out whats going wrong and fix these issues bit by bit through the beta process so that we can all enjoy this game on launch. I am going to keep giving it a shot each day but for some they may as well kick back and wait until these issues are corrected. Its up to each person to decide their level of tolerance for these beta issues 
