Shadow of the Tomb Raider is an action-adventure video game developed by Eidos Montréal in conjunction with Crystal Dynamics and published by Square Enix. It continues the narrative from the 2013 game Tomb Raider and its sequel Rise of the Tomb Raider, and is the twelfth mainline entry in the Tomb Raider series. The game released worldwide on 14 September 2018 for Microsoft Windows, PlayStation 4 and Xbox One. (Wikipedia).
We test using the Highest preset, with AA disabled, DX12 API.
Shadow of the Tomb Raider is another game where Nvidia typically has the edge over AMD, so the BIOS update here really helped close the gap on the RTX 2060. Without the update, the card was running 10% behind the RTX 2060 at 1080p and only 3% ahead of the 1660 Ti. With the updated applied, it still couldn't catch the 2060 but the deficit shrunk to just 1%.
Similarly, at 1440p, without the BIOS update the 5600 XT was 12% behind the RTX 2060, but this shrunk to 2% with the update. To my mind, that's a small enough gap to make no difference to your actual gameplay.