Non Steam version of PS2 configured as shortcut in Steam...
Planetside 2 working very well @ 720p and 30fps
A less ancient laptop would probably manage 1080p @60fps depending on your networks throughput.
Host
2500K @ 4.6ghz, 8GB RAM, Radeon HD6970 2GB, Win7 64 - wired to Router
Client
HP Pavilion xd8000, P4 3.2 HT Prescot, 2GB RAM, X300 Mobility Radeon, Win 7 32 - wireless( some crappy no brand PCMCIA wifi card)
https://www.youtube.com/watch?v=qKS4...ature=youtu.be