Why does the Fanxiang S790 2TB cause random frame drops and broken immersion during boss fights in ELDEN RING: Shadow of the Erdtree?

During a critical boss fight, the game stuttered and the frame rate halved, making dodging impossible. I tried updating the chipset driver, which resulted in a Blue Screen of Death. I used GamePP Peripheral Driver Conflict Detector to identify a conflict and reset the driver, then switched to High Performance mode. GamePP Frame Time Analyzer confirmed frame generation times stabilized between 16-18ms, and SSD temperature remained between 45-50℃.