There are more issues with the PC release of Tomb Raider than simply poor performance with nVidia cards, there is a big difference between full-screen and windowed modes. Full-screen is missing a heap of effects like lens flare and water splashes on the screen.
via N4G: pc news feed http://n4g.com/news/1188014/full-screen-issues-with-tomb-raider-on-pc
via N4G: pc news feed http://n4g.com/news/1188014/full-screen-issues-with-tomb-raider-on-pc