Is adjusting PCIe link speed the fix for severe screen tearing and unstable FPS in The First Descendant on an Onda 9D4-DVH?

When the flashy effects of The First Descendant fill the screen, the visual impact is incredible, but the tech was failing me. On this Onda 9D4-DVH, the PCIe bus bandwidth was swinging wildly between 12-15GB/s during 4K texture streaming, causing a 10-20ms sync offset. I tried forcing V-Sync to stop the tearing, but the input lag spiked to over 50ms—it felt like I was playing in mud, which was totally unacceptable. I went into the BIOS and forced the PCIe mode to Gen3 High Performance and locked my virtual memory to a fixed 32GB block. In RivaTuner, frame times collapsed from 22-38ms to a smooth 14-18ms, and the tearing vanished. I actually bricked my boot sequence when I first locked the page file, but moving it to the SSD partition fixed it. Board temps are 52-58℃ with fans at 1500 RPM. Comparing screenshots, the fluidity is night and day, and frame times are now locked at 14-18ms.