Whenever possible, I run synthetic tests on Linux to avoid this and many other frustrations. When running application tests on Windows, I leave the setting at i

Whenever possible, I run synthetic tests on Linux to avoid this and many other frustrations. When running application tests on Windows, I leave the setting at its default: disk cache enabled, and buffer flushing allowed. When running synthetic benchmarks on Windows, I turn buffer flushing off to get an accurate measurement of the drive's capabilities, relatively unhindered by OS shenanigans.