How to fix blurred facial details and texture sharpness in Aka's DLSS mode?

Character close-ups in Aka looked like they had a soft-focus filter applied, ruining the immersion. I tried switching DLSS from Quality to Balanced, which added 8 FPS but made the blurring even worse. I then used the GamePP DLSS/FSR Calibrator to raise the sharpening intensity to 72 and set render resolution to 100%. RivaTuner monitoring showed a significant improvement in effective render pixels, while GPU-Z confirmed the GPU stayed at 55-61℃. This calibration finally switched the visual quality to a sharp, detailed state.