Why does Gray Zone Warfare freeze during large map loading?

Running a AAA title on this entry-level board is pure masochism; the I/O blocking during map loads is unbearable. I tried moving the page file to a separate SATA drive, but this actually increased system latency and frame drops. I used the GamePP NVMe Queue Depth Configurator to increase depth to 2048 and limited background I/O. CrystalDiskMark showed random reads jumped from 42MB/s to 65MB/s, and HWInfo confirmed SSD temps at 40-52℃ with 15-40ms latency.