Eidos has been quick to unleash a patch for the PC version Tomb Raider: Legend, Lara Croft's new adventure which has only just hit games emporiums.
The patch updates the game to version 1.1 and addresses various, un-named issues to do with performance problems, stability problems and controller problems.
Apparently though, the patch does not fully resolve performance problems users with nVidia-based graphics cards may be experiencing when activating the game's 'next-gen content'. But, an updated driver nVidia is currently working on should iron out these issues. No news on when this driver may be released as yet, so we can only advise you to exercise patience if you're one of those for whom next-gen Lara and nVidia just aren't seeing eye to eye.