I set a LAN party with some friend a few weeks ago, and I thought that would be great to play Nexuiz on a LAN. My pc is mid-end, but incredibly it was the best pc on the LAN. The rest were basic Pentium 4/Athlon XP with one GB RAM and a Radeon 9600/GeForce 5500. Of course you can't play CoD4 on those things with any high setting, but come on, its Nexuiz! On lower settings its like Counter Strike 1.6 or Quake 3!
But anyway, even with the minimum settings, on the smallest maps, their performance was terrible. I still don't know why they run so bad. Outdated OpenGL libraries?