I am running High Sierra and a PCIe AHCI SSD and the latest version of Parallels Desktop 14 running Windows 10. My SSD benchmarks at around 1,060MB/s read and 800MB/s write on the Mac. However, in Windows running in Parallels, I'm getting about 500 MB/s read and around 400 MB/s write.
The Mac it is running on is a 12 core Mac Pro with 64 GB of RAM, of which I have allocated 6 cores (12 virtual cores) and 24GB of RAM.
I'd expect some loss in performance due to running in a VM, but not 50% less.
I've disabled Antivirus and it helped improve overall performance a little bit, but didn't change the benchmarks.
Are there steps I can take to increase disk read and write performance in Parallels?