https://wccftech.com/tomb-raider-nvidia-rtx-gamescom-demo/

Several websites, including IGN (whose captured footage is available in the embed below) and PCGamesHardware, were able to capture footage of the Gamescom 2018 Shadow of the Tomb Raider demo running on the new RTX 2080Ti GPU with raytraced shadows enabled.

The setup worried attendees, however. Running at 1080p resolution, the game couldn’t even stay locked at 60 frames per second and drops were quite noticeable at times. This is all the more worrying considering that Shadow of the Tomb Raider launches in less than a month, though it should be noted that the developers have confirmed how NVIDIA RTX support will only be added at a later date via a patch and could thus be very much a work-in-progress.