I managed to beat them, but that does change my view in that the fight is unbalanced. First of all I had to restart a few times, because if you don't win initiative you are dead before you can blink. I used 3 potions of speed and several healing potions. I also blew the horn to summon the ogres, but they never showed up.

Key is to incapacitate Baretha first, she will down any character within reach first round with 3 super attacks. So I used hold person, and luckily she failed her saving throw. A cloud of daggers spell ensured she took damage each round, and again I was lucky that the invisible guy was within the cloud and became visible. How I managed to kill the remaining 3 guys was beyond my comprehension. One of them died before concentration on hold person was about to be broken, but I managed to kill Baretha first. Two left, much better odds now but still they gave me trouble and I had to reload a few times before killing the last.

What was wrong with this fight? 1) It took an extreme amount of luck and save/load. 2) I had to use items I could only use once. If other fights were like this I would soon run out of potions to get through the fights. And I honestly find it unsatisfactory to get through my battles using one-time use items rather than hard earned abilities. I understand if the occasional weapon/armor/item shows up that may add to a characters abilities, but that should be a rare thing, magic weapons should not be littered around everywhere. They should be rare and potent imo. It is not fun for me getting through every hard fight throwing bombs I find along the way, or drinking potions. It's not proper RPG. You want to see your character grow and be able to take on harder enemies by using class level abilities. Otherwise it is an adventure game, not RPG.

And to say you are not supposed to bump into this encounter in the first place? It is an important part of the story, Lae'zel seaching for her kin. Plus why have a part of the map you are not supposed to explore? In case you choose the above ground route to Moonrise Tower you have to get through the githyanki. If the choice you are given is a false choice that would make the game less rich I think. There is a choice I believe, because that allows you to play through the game in different ways. Plus we don't know yet if the main story will require that we find the githyanki camp.

Maybe in the full version when we can rise to 5th level it will be easier, but will still require luck and potions to win I am sure.