Why does the loading bar stall at 70% in Where Winds Meet on Biostar?

While loading the vast open world, the progress bar would often stall at 70%, which severely degraded the experience. I tried clearing system temporary folders, but it only shortened the load time by less than a second, which didn't solve the core issue. I used the GamePP Resource Scheduler to boost the I/O priority of the loading process and optimized virtual memory distribution. Loading time dropped from 50s to 32s per GamePP, and motherboard temperature stayed at 42-48℃ per HWiNFO64.