It sounds like the display driver is crashing.
Try the troubleshooting steps listed in this document below. Try a clean install of Crimson 17.5.2 and navigate to Radeon Settings > Gaming > Global Settings > Wattman > Accept and set the Power Limit to +50% and click Apply.
Check to see if the issue is resolved.
As there has been no update on this thread, I am locking the discussion. If you are still experiencing the same issue, please start a new discussion and provide the essential information required. https://community.amd.com/thread/196209