How to stop screen stuttering while traversing cities in Kuro no Kiseki?

While dashing through city streets, the screen had slight frame skips every few seconds, disrupting the flow. I tried enabling PCIe 4.0 Ultimate Mode in BIOS, but random read fluctuations actually worsened, which was disappointing. I then used GamePP NVMe Queue Depth Configuration to increase the queue depth from 64 to 128 and activated high-performance mode in the GamePP Power Plan Switcher. Frame times converged to 8-12ms per RTSS, with temps at 45-55℃ per AIDA64 and 12% gain via CrystalDiskMark.