How to fix I/O blocking on Kioxia EXCERIA PRO 2TB in Ark 2?
Entering the game world was a chore because the dinosaur models would take several seconds to fully render, which forced me to look into my storage performance. The Kioxia EXCERIA PRO 2TB was hitting a wall with fragmented resources, and the shallow queue depth was causing response delays of 120-180ms. I tried enabling 'Fast Startup' in Windows, but that did absolutely nothing for game load times—a blind attempt that taught me I needed to go deeper into the OS. I went into the registry and bumped the disk I/O queue depth from the default to 2048, then ran a manual TRIM optimization for the NVMe. CrystalDiskMark showed random reads climbing from 60MB/s to 85-92MB/s, and the models now pop in almost instantly. I did experience a brief disk recognition delay after the registry edit, but a reboot and a chipset driver update fixed it. Temps are steady at 40-52℃, and the I/O block is completely gone, though the registry tweak is a bit risky for novice users.