I have experienced a lot of disconnects form the server that drop me to the login screen between load screens. I have also had a lot of rubberbanding (lag) that snap my character or ship back to a previose position. I know this may be reported already, but I thought I would point out the obvious. I also have had times where the mission cannot be finished because some of the groups of ground combatants I am supposed to fight dissapear after I respawn. Even going back afterwards to see if I can continue the the fight will work, but the enemy is still not anywhere to be found. I also have a hard time logging in, but I have seen that reported.
BTW: The game is good and it has a lot of potential. I look forward to playing it.