Why does my Dota 2 loading bar freeze at 80% on Kioxia EXCERIA PRO?

I noticed weird fluctuations in random read response on my Kioxia EXCERIA PRO during match loading, causing the progress bar to stall at 80%, which is incredibly frustrating. I first tried disabling the write cache in the system for stability, but this actually increased loading time by 4 seconds. I then used the GamePP NVMe Queue Depth Configuration to increase the queue depth from 1024 to 2048 and enabled the forced write cache flush. CrystalDiskMark confirmed 4K random reads rose to 68-75MB/s, with I/O Wait Time at 12-28ms via GamePP Hardware Sensor and temps at 48-54℃ per HWMonitor, stabilizing resource scheduling at 5.1-6.4ms.