How to resolve cache overflow on Zhitai TiPro9000 4TB?
The tearing was brutal when entering Midgar; distant textures looked like a jigsaw puzzle being put together in slow motion. Looking back at the logs, once the Zhitai TiPro9000 4TB passed 1.2TB of writes, the speed plummeted from 7000MB/s to a pathetic 1100MB/s, causing the assets to desync. I wasted time trying a disk defrag tool, which is useless for NVMe and just added unnecessary wear—it was a total facepalm moment. I eventually flashed the latest official firmware and disabled 'Write Cache Merging' in Device Manager, manually capping the queue depth to 32. In CrystalDiskMark, my 4K random reads jumped from 45-51MB/s to 62-68MB/s, and the game feels snappy again. I had a weird issue where the drive wouldn't show up for a second after the firmware update, but a quick M.2 reseat fixed it. Temps are chilling between 48-55℃. System logs confirm the I/O commands aren't piling up anymore, so the fix is solid.
