Question about AMD FSR Lossless Scaling vs. Driver

[dEEkAy]

Is there any difference between using Lossless Scaling to scale up a 2560x720 image to 5120x1440 compared to just using the driver option AMD has for this?

Let me give you an example. I want to use scaling on Amazons New World. So i just tick the RSR option in the driver, start game and select a resolution below my native display resolution. It then gets upscaled to 5120x1440.

Does Lossless Scaling do anything else if i used it instead of the driver?

Now looking at New World, that game is kinda difficulty as it just ignores some driver settings. You cannot enable GPU scaling and tick integer scaling. This results in 2560x1440 always being stretched across my 5120x1440 32:9 display. Other games do care about these settings and just slap black bars left/right, like Squad does (that game is somewhat finnicky when it comes to ultra wide resolutions and the fov).