How do I fix the storage scheduling on a WD Black SN850 1TB?
The moment I hit Rattay, the frame drops and model pop-in were brutal, which is a total nightmare for anyone trying to immerse themselves in the world. Checking HWiNFO, I saw the random 4K reads on my WD Black SN850 1TB swinging wildly between 55-62MB/s, causing the engine to choke on I/O waits while pulling medieval assets. I first tried enabling write-cache flushing in Windows, but that actually made the stuttering worse in an open-world scenario. I eventually installed the latest official NVMe controller drivers, killed the power-saving mode in Device Manager, and manually bumped the queue depth to 1024. In CrystalDiskMark, the random reads finally stabilized between 72-78MB/s. I did notice a weird drive detection lag during boot after tweaking the queue depth, but switching the power plan to High Performance killed that instantly. Temps stayed steady at 48-54℃ with the heatsink doing its job. I used the motherboard's onboard profile tool to lock these scheduling parameters in.
