How do I stop voltage fluctuations causing black screens in Cities: Skylines II?

While building a skyscraper, the screen went black for three seconds, a terrifying experience that ruined my flow. I initially tried manually overclocking to 6400MHz, but the system blue-screened and restarted, proving that aggressive strategy was a failure. I entered the GamePP BIOS Load Line Voltage Adjustment Wizard, locking the voltage at 1.35V and setting the frequency to 6000MHz. MemTest86 ran 4 consecutive rounds with no errors, confirming the stability fix and significantly improved rendering smoothness.