I've been playing it for like two weeks now and I'm addicted. Game is pretty awesome. Check out youtube vids if you've never heard of it.
Anyway, I have a shitty laptop that I've been playing it on and I've found only one server that actually runs the game well with no lag. It's a fun server with a good admin and a group of his friends that frequent it. There's also a couple other groups wandering around. I'll leave the details here and if anyone decides to join up send me a PM here and I'll hook you up with some stuff. I have a pretty big base with a ton of supplies.
Server Name: Extinction Theory
IP Address: 126.96.36.199:28075
Once you load the game and are at the server list, just hit F1 on your keyboard then type the following: