Anti-Aliasing - TAA (1TX)

Graphics API - Vulkan

Overall Quality - Low

Resolution Scale - 75%
Leave everything else at default

Vulkan API provides far better performance compared to OpenGL. Overall quality on low will roughly approximate to base PS4/Xbox One settings and will still provide greater detail than the Nintendo Switch version.

I choose to drop the resolution scale to 75% which equates to 600p. Doing so provides a full 60fps experience while maintaining 3 hours of battery life. The 600p resolution is cleaned up nicely by the in-game TAA and remains higher than the Nintendo Switch version's resolution. Though, I'm sure you could increase the resolution to 800p at cost to battery life.

Testing was done on SteamOS 3.5 with Proton 8.

Vsync: OFF
Anti-Aliasing: TSSAA(8TX) (it's very crucial, since any other AA options or none are leading to performance lag very hard)
Graphics API: Vulkan
Resolution Scale: 80% (can be also set to prefered, minor impact on power draw tbh)
Compute Shaders: ON (for better input responsiveness)

Also don't forget to set Allow Tearing to ON for get rid of unnecessary input lag