USB drives ejected during sleep ONLY when XMP is enabled in BIOS.

Anyone have any ideas about this one? I'm on 10.12.6. When I wake from sleep I get "Disk Not Ejected Properly" for my external hard drive. This only happens when I have XMP enabled in my BIOS.

Motherboard: Gigabyte GA-270MX-Gaming 5 CPU: Intel 7600k GPU: GTX 1080 Ti RAM: 16 GB 3000 Mhz Corsair Vengeance