It's really crowded in the ICEE server at the moment, so if you log out you might not be able to get back in. For those of you who managed to get accounts (yea, we saw your name Opel, lol), do post all your screenies in the forum for everybody to see!
Performance-wise, the new build seems to be holding up better in terms of lag when a lot of gamers crowd around mission instances. It's still there, which is understandable, but its quite minor. I haven't been able to level up and get further into the map but if I manage to log in, I'll post more screens in the forum.
Partying is DEFINITELY the way to go if you want to clear mobs and instances fast. And a short round through the first instance can easily get you over 600 Buddy Bonus points that you turn in to the sage Alvin (in town) for EXP.