How to fix I/O delays on MSI A520M-A PRO in Phantom Blade Zero Beta?
I couldn't take it anymore; this board was hitting massive I/O bottlenecks while loading the fragmented resources of the beta, causing the screen to hitch every few seconds. The PCIe lanes on the MSI A520M-A PRO, under default settings, had a handshake latency of 15-22ms with my NVMe SSD, which translated directly into game stutters. I tried increasing the virtual memory in Windows, but that just bloated the disk writes and pushed the drive temp to 65℃—a complete waste of time. I eventually went into the BIOS, forced the PCIe link mode from 'Auto' to 'Gen3', and updated to the latest chipset drivers. In CrystalDiskMark, the random read latency dropped from 18ms to 10-13ms, and scene transitions became buttery smooth. I did have a brief scare where the drive wasn't detected after the PCIe change, but a quick reseat and a BIOS update fixed it. Board temps are around 42-48℃. I've exported the config file to back up these optimization parameters.
