I think I have narrowed down issues with my Gigabyte Vega OC 64 to the HBCC memory segment setting in Radeon. Turned on I'm experiencing AMD driver crashes where the screen goes blank for a couple minutes and then restores with a message saying the Radeon driver had been reset. This is only when doing heavy graphics work or benchmarking. Turned off, I'm not getting these crashes.
Anyone else having an issue? I have always had the HBCC memory segment enabled without issue.