Fixing read/write latency on Western Digital SN850X 1TB?
There is nothing worse than a perfect sword combo being ruined by textures suddenly disappearing or flickering mid-fight. I figured out that once the SLC cache on the WD Black SN850X gets fragmented after long sessions, random read speeds tank from 70MB/s down to 35-42MB/s, leaving the engine starving for high-res textures. I tried running a disk defrag first, which was a rookie mistake since that's useless for NVMe and just eats through the drive's endurance—total facepalm moment. I ended up flashing the latest official firmware and disabling the NVMe controller's power management. In AIDA64 benchmarks, random reads stabilized at 68-75MB/s, and texture load times dropped from 1.8s to a crisp 0.6s. I actually had a scary moment where the drive disappeared from BIOS after the update, but a quick re-seat of the M.2 slot and cleaning the contacts fixed it. Drive temps are staying between 46-54℃, and memory temps are hovering around 58-63℃.
