How to fix texture flickering in RE Village with Crucial DDR4 8GB?

I spent hours exploring village corridors where wall textures jumped erratically, totally breaking the eerie immersion. I attempted to lower texture quality to medium; while flickering stopped, the loss of detail was unacceptable. I utilized GamePP BIOS Load-Line Voltage Adjustment Wizard to raise voltage from 1.20-1.22V to 1.32V per HWiNFO and adjusted tRCD. AIDA64 showed latency dropped from 82-90ns to 74-78ns, and MemTest86 confirmed zero errors with temperatures at 48-53℃ per AIDA64.