Confirmed - the HackFlags [600] worked for me. I initially tried HackFlags [400] but that didn't work.

Rig Specs:

• OS: Win 10 1709 with the latest update (update alone didn't work)
• Mobo: Gigabyte Z270p-D3
• GPU: 6x 1080 ti

Thanks all for the hours of troubleshooting and sharing your findings.