I'm seeing throughput fluctuations on my WD Black SN850X during high-frequency read/writes in Hogwarts Legacy duels. Should I run benchmarks to find the bottleneck?

According to report 2026-WD-04 on Windows 11 24H2, CrystalDiskMark showed 4K random performance jumping between 95MB/s - 130MB/s and throughput swinging from 5.3GB/s - 6.9GB/s, which froze the screen during spell casts. I ran a 3DMark stress test first, but the 15% score variance showed the benchmark didn't match my real-world experience. I switched to Novabench to lock the queue depth and mirrored the load of the actual game scenes. The throughput finally converged to 5.7GB/s - 6.5GB/s, and the tearing vanished. A firmware update further tightened this to 5.6GB/s - 6.3GB/s. Cross-verifying with Blender render times proved the fix. Spell casting is incredibly fluid now with zero input lag.