Why does Genshin Impact show a 2-second black screen during world transitions?

Switching to Inazuma felt broken. I tried updating chipset drivers, but the 15ms latency persisted. I used GamePP Peripheral Driver Conflict Detector to disable conflicting services and increased NVMe queue depth from 512 to 1024. CrystalDiskMark showed latency dropping to 8ms. HWiNFO64 verified drive stability at 45-50℃, making transitions instant.