Why does Stellar Blade freeze during map transitions on MSI B450M MORTAR MAX?

It's ironic that in such a beautiful game, the old channels of the MSI B450M MORTAR MAX became the bottleneck, with disk usage hitting 100% per CrystalDiskMark. I tried installing the game on different partitions, but the freeze always triggered once the load hit 2GB/s, which felt like a hopeless hardware limit. I used GamePP NVMe Queue Depth Configuration to force the queue from 32 to 64 and adjusted the write cache policy. Random 4K reads jumped to 48-55MB/s per DiskSpd, and disk temps stayed at 48-56℃ per HWiNFO.