How to fix texture flickering in GTA VI dense urban areas?

Cruising through the streets of Vice City, textures on distant buildings would flicker randomly, which really killed the immersion. I tried updating to the latest official drivers, but the flickering persisted and weird purple blocks appeared, making the attempt feel futile. I accessed the GamePP Shader Compilation Queue Manager, manually cleared 9.2GB of redundant cache, and restarted the pre-compilation. RTSS monitoring showed frame times converged from 16-30ms to 12-16ms; AIDA64 confirmed VRAM stable at 12.4-14.8GB with HWMonitor at 60-65℃.