I bought this game with my friend so we could play multiplayer together because it seemed like a nice title. The multiplayer does not work for us even with firewalls off and no routers involved, the controls for this game are also terrible. The default controls are not comfortable at all, which means you have to tweak it all. And even then this game does not support mouse buttons for attacking. Its mmo style control scheme with 1-0 shortcuts, and you cant use your mouse to attack. I have already reached out to GOG for a refund on this game.
I would have to advise people to steer clear of this game. The combat is as bad as i have seen in any game ever. I have no basis for comparison as it is literally the worst rpg I have ever played in my life. I love the fact that its immersive and has a great story, is open world, actions have consequences. But the combat and clunky controls make this game unplayable for me.