Continuing from above. When it comes to performance modes, even a poorly optimized title like the Matrix UE5 demo can easily run at higher framerates if you just disable hardware accelerated lumens. Software lumens has a far lower performance hit. The traffic and pedestrian density also has a massive hit so if you can also tone that down for performance mode.
Here is what Alex found. With Software Lumens and traffic turned off, he was able to take his framerate from 38 to 95! over a 2.5x increase without ever dropping resolution. If you drop resolution from 1440p to 1080p, use fsr, use software lumens and turn down some CPU intensive settings like A.I density then you can easily have a 1440p 30 fps game running at 1080p 60 fps with very little visual downgrades.
If anything, Im surprised Epic didnt choose software lumens for the series s version. It wouldnt have needed to dip significantly below 533p if it was using software lumens since it is 38% more efficient.
And this is a very poorly optimized single threaded demo which devs will surely optimize for release.