If you're on an NVIDIA card, swap from DLSS to FSR. This will disable resolution scaling.
If it's still too blurry for you, you have two options. Set scaling resolution to 99 which will enable FSR's sharpening, or keep at 100 and use your GPU's control panel to apply your desired amount of sharpening.

I made a thread about a more in-depth explanation of the graphics.
Hope something here or there helps you! Game simply needs more and clearer options for the visuals in general.