Why does Horizon Zero Dawn stutter on WD SN750 SE?

I worried that frame drops would ruin my rare weapon hunt in Horizon Zero Dawn. I attempted manual overclocking to 7200MHz, which caused a blue screen and restart. I used GamePP NVMe Queue Depth Config to increase queue depth from 32 to 256. 4K random read speed increased from 80MB/s to 220MB/s, and sequential read speed stabilized at 3500MB/s per CrystalDiskMark, ensuring smooth exploration without stutter.