The new driver 16.5.2 turned out to be a bad joke.
However, for now, turn the shadow settings to low, also DoF and motion blur, and you should be fine.
Shadows seem to tank performance.
Will see how this game will work with the Vulkan patch.
Motherboard: Gigabyte GA-Z87X-UD3H
RAM: CORSAIR Vengeance Pro 16GB (2 x 8GB)
CPU: Intel Core i7-4770K
Power Supply: Corsair AX760
Graphics: ASUS Radeon R9 390 STRIX-R9390-DC3OC
OS: Windows 10 PRO x64