Compared to 16.12.2, the installation of the latest drivers 17.2.1 causes a strong performance decrease in Paragon and Unreal Tournament (UE4).
I'm taking about from 60-70FPS in 16.12.2 to 20-30FPS in 17.2.1, in Paragon. The same occured with all interim drivers beween the two releases.
Returning to 16.12.2 allows to experience back the 60-70FPS.
Is there a tweaking that must be made? In the meantime I'm staying on the 16.12.2.
For information my rig is:
AsRock 970 Fatal1ty (bios 1.2)
8GB RAM 1600mhz XMP
2x Sapphire R9 Fury Nitro 1050mhz - 16.12.2
Windows 10 - 64b