TressFX performance is currently not that great on nvidia hardware, This is a quick video of the Steam Tomb Raider PC benchmarking tool.

• Settings are set to Ultimate with FXAA AA.
• i7-2600K @ 4.4ghz
• GTX 670: default
• Vsync: Off: I game on a 120hz Asus so I usually always set vsync to Off.
• Fraps was used which takes a bit of performance hit. about 4-8fps on average.