Red Dead Redemption 2 is a 2018 action-adventure game developed and published by Rockstar Games. The game is the third entry in the Red Dead series and is a prequel to the 2010 game Red Dead Redemption. Red Dead Redemption 2 was released for the PlayStation 4 and Xbox One in October 2018, and for Microsoft Windows and Stadia in November 2019. (Wikipedia).
Engine: Rockstar Advanced Game Engine (RAGE). We test by manually selecting High settings, instead of using a preset, including TAA, Vulkan API.
As for Red Dead Redemption 2, we test using High settings, and at 1440p the RTX 3080 is 24% faster than the 2080 Ti. Compared to the RTX 2080, it's an improvement of 60%.
Once more, those margins of victory for the RTX 3080 increase at 4K, where the card is once more 29% faster than the 2080 Ti, and 68% faster than the RTX 2080.