Fixing WD Black SN850 2TB I/O lag in A Plague Tale Requiem?
Walking through those rat-infested towns, the screen would just freeze for a split second, which is a death sentence in fast combat. Monitoring showed the WD Black SN850 2TB hitting I/O response times over 120ms when loading huge textures. I tried lowering the texture quality, but the game looked blurry and the stutters were still there—clearly a driver-level mess. I wiped the generic NVMe drivers and installed the latest official ones, then set the disk power state to 'Always On' in the power options. In RivaTuner, my 1% lows jumped from 32 FPS back up to 48-52 FPS, and the transition hiccups vanished. I did have a slow boot issue right after the driver update, but disabling Windows Fast Startup fixed it. The drive temp stayed stable at 42-50℃. The performance panel confirms I/O latency is now under 15ms, and frame times are a steady 5.1-6.4ms.
