During high-frequency read/write cycles in Baldur's Gate 3 combat, my WD Black SN850X 4TB PCIe 4.0 SSD throughput fluctuates, causing scene stutters. Should I run benchmarks to locate the bottleneck?

In the Report 04 test environment, the WD Black SN850X 4TB PCIe 4.0 SSD throughput was swinging between 5.5GB/s - 7.2GB/s, with CrystalDiskMark showing 4K random performance jumping from 97MB/s - 132MB/s. This caused noticeable hitches during scene transitions. I started with a 3DMark stress test and saw a 15% score variance, then used Novabench to lock the queue depth parameters while simulating the load with Unigine Heaven. After a firmware update, CrystalDiskMark throughput tightened to 5.9GB/s - 6.7GB/s, and the screen tearing during turn transitions completely vanished. I used Blender Benchmark to confirm the precision of these results. Just a heads-up: when using Ultra textures, throughput still dips toward 5.5GB/s occasionally. That's a physical hardware limit, so don't expect software to fix it entirely.