Why are unit textures blurry in Total War: Warhammer III at 4K?

Battle scenes looked mushy due to DLSS over-smoothing. I tried Balanced mode, but it got even blurrier. I was annoyed. I used GamePP DLSS/FSR Image Sampler to increase sharpening from 50 to 75 and set resolution to 100%. RivaTuner showed GPU temp at 55-60°C and sharp textures. It switched the look back to how it should be.