Did it crash?
According to OCCT logs, Your GPU temperatures and main voltages were fine. May be someone else with more expertise can find out if there is any abnormal readings from the OCCT graphs you posted.
I installed the latest driver and AMD Chipset
The 3DMark test unfortunately does not pass again, writes about an unknown problem
Also I installed "Call of Duty: WWII" and Need for Speed Payback - Both games perfectly run and play. (I think they use only one GPU)