How to fix memory controller load peaks in Project Orion urban areas?

I was so excited for Night City with 64GB of RAM, but the high controller load caused annoying stutters. I first tried lowering in-game graphics; while FPS went up, the micro-stutters persisted. I used the GamePP Memory Controller Load Monitor to drop the frequency to 6200MHz and adjusted SoC voltage to 1.25V per CPU-Z. RTSS showed frame times dropped to 10-15ms, AIDA64 confirmed temperatures at 56-62℃, and HWiNFO64 showed load at 68-85%.