no lag here, I have a fairly new comp though
Pentium D Dual core 32
1 GB DDR2 RAM+4gb VRAM
GForce 7600
settings maxed out at 1280x1024 res High Color depth, graphics card in T&L mode, no mipmaps, AA on 6x. etc.
The chairs looked nice on that bridge, I wouldn't mind seeing an Ent A bridge with those chairs instead of all the regular ones.