Why does Horizon stutter during scene transitions on this board?

I felt my immersion shatter when textures failed to load while sprinting through the vast open world. My initial attempt to increase virtual memory backfired, causing loading times to spike and making the lag worse. I then used GamePP NVMe Queue Depth Config to raise the queue depth from default to 2048 and switched the power plan to High Performance. This resolved the PCIe channel congestion immediately. RTSS monitoring showed frame time stabilizing from erratic 15-25ms spikes to a consistent 16ms.