I use Lossless Scaling with FSR personally, I have a 1440p ultrawide but a low-end GPU (GTX 1060 6GB), I create a custom resolution on the NVIDIA control panel (1920x810, 1663x701, 1280x544) to force 21:9 aspect ratio, these resolutions would show up in the options and I would select either the 1080p one or 1663x701 then use Lossless Scaling FSR, looks fine. I just wish the game stuck in UE4 since Life Is Strange do not need that much graphical fidelity (It's supposed to be Low poly models, hand painted textures just like how DONTNOD do it)
I also stream this game on a 3DS using the accessibility option where you can only use one stick which was very useful; Same for Switch at 720p but honestly? Even at 720p it lagged at some points and I think it's because of Shadows, even with Shadows ON at 320x240 I noticed some lags when it got introduced