fragmented test file
The way a test file is created results in the fragmented test file, so sequential benchmarks results may vary depending on the number of fragments Please, see how the test file is created in the diskspd utility code
https://github.com/hiyohiyo/CrystalDiskMark/issues/6
I'll consider the issue.
hiyohiyo 
CrystalDiskMark
The way a test file is created results in the fragmented test file, so sequential benchmarks results may vary depending on the number of fragments Please, see how the test file is created in the diskspd utility code