Why does my Biostar B650MT memory controller crash during large battles in Expeditions: Rome?

I finally hit that flow state in a massive campaign, but the joy lasted ten minutes before the game just vanished back to the desktop. The logs showed the memory controller on my Biostar B650MT was having voltage drops at 6000MHz, leading to read/write errors. My first instinct was to shove 1.4V into the RAM, but that just spiked temps to 65-70℃ and made the crashes even worse—totally the wrong move. I eventually backed off to 5200MHz and manually tuned the primary timings to 36-36-36-76. I ran AIDA64 memory stress tests for 4 hours straight with zero errors, and the crashes stopped completely. I was worried the lower clock would kill my FPS, but in reality, I only lost about 2-3 frames, which is a tiny price to pay for a game that actually stays open. VRM temps are now 55-61℃ and CPU cores are at 62-68℃. Saved the settings to a BIOS profile, and RAM temps are now 58-63℃.