I don't know if i'm experiencing the same thing. The game stops and starts every 3 seconds or so. I've just about tried every setting, version and disabled all the GOG in game features. It does this even in the opening cinematic. I couldn't make it past the past character creation. Hope there's a fix to this.
Specs:
Radeon Software Version - 17.5.2
Radeon Software Edition - Crimson ReLive
Graphics Chipset - Radeon RX 480 Graphics
Memory Size - 8192 MB
Memory Type - GDDR5
Core Clock - 1306 MHz
Windows Version - Windows 10 (64 bit)
System Memory - 8 GB
CPU Type - IntelĀ® PentiumĀ® CPU G4600 @ 3.60GHz