How to fix blurry textures in Ratchet & Clank: Rift Apart with WD Black SN750 SE?

I noticed Ratchet's face looked blurry in close-ups with DLSS Quality. I tried switching to Balanced, which made the blur worse. I used GamePP DLSS/FSR Image Sampling Calibrator to set sharpening to 75. RivaTuner confirmed the effective render pixels improved significantly. My WD Black SN750 SE 1TB handled the data stream well, with GPU temp at 56-62℃, giving me the sharp look I wanted to switch.