How to resolve VRAM swapping and black screens in Banishers?

Exploring the ruins of New Eden, the screen suddenly went black for two seconds followed by severe frame drops. I tried manually overclocking to 2800MHz, but the system immediately blue-screened and restarted. Using GamePP BIOS Load Line Voltage Regulator, I relaxed the timing to 22-22-22-45 and fine-tuned the voltage to 1.25V. MemTest86 confirmed 0 errors across 4 consecutive passes. Temperature stabilized at 48-55℃ per GamePP Hardware Sensor, and fan noise decreased, indicating stable operation.