Why does UE5 Matrix Demo freeze during fast camera pans?

I felt a total loss of immersion; the screen would freeze eerily whenever the camera swept across complex buildings. I tried enabling write caching in Windows Disk Management, but it didn't help and actually made the system unresponsive during large loads. I then used the GamePP NVMe Queue Depth Configuration to raise the queue depth from 1024 to 2048. After this, CrystalDiskMark showed a +15% boost in 4K random reads, and RTSS confirmed frame time fluctuations dropped from 18-60ms to 10-15ms. AIDA64 showed temps stayed at 42-55℃. I can finally save