Why do metal textures look blurry in The Sims 5 when using DLSS quality mode on Valkyrie V240 LOKI?

The blurry metal textures at 4K were ruining the visual fidelity. I tried switching to Balanced DLSS, which added 10 FPS but made the blur worse per RTSS. I used GamePP DLSS/FSR Image Sampling Calibrator to raise sharpening from 50 to 75 and set render resolution to 100%. RivaTuner showed improved effective pixels. HWiNFO monitored 52-58℃ temps and GPU-Z showed 2400MHz stable. The brushed textures became sharp, restoring the detail I expected.