Why do textures flicker in The Last of Us Part I ruins?

Whenever I entered a new room, posters and textures would flicker between blurry and sharp, creating a stressful visual experience. I tried lowering texture quality to Medium in settings, but images became coarse and the flickering remained, wasting my time. I used the GamePP Shader Compilation Queue Manager to wipe 4.2GB of redundant cache via DiskGenius. RTSS showed frame times stabilized from 42-55ms to 14-18ms, and HWMonitor confirmed memory temperatures at 45-51℃ with a load of 72-81%.