How to fix blurry alien textures in The Callisto Protocol?

Observing alien skin textures was frustrating; the DLSS reconstruction made details blurry, creating a smearing effect at 4K. I first tried switching DLSS from Quality to Performance mode; while FPS rose by 12 per RTSS, the blurriness worsened. I then used the GamePP DLSS/FSR Image Sampling Calibrator to increase sharpening from 40 to 66. The effective pixel fill rate increased per RivaTuner, data loss dropped to 10-15% per GamePP Monitor, and fan speeds remained stable at 1200-1400RPM per Hardware Sensor.