Rending Device lost

I’ve been getting progressively more Rending Device Lost.

sfc /scannow has been ran as well as reinstalling drivers using DDU to ensure it was full uninstalled.

DXdiag
pastebin . com/MCBgh3MD

Have you doublechecked your CPU and GPU temperatures? Have you submitted any crash reports to Blizzard? If you submit a ticket they can give you more info about a submitted report.