Windows 10
AMD Ryzen 5 2600X 6x3.60GHz
Sapphire Radeon RX Vega 64 Nitro+ 8GB
16GB Ram
Demo was installed on an SSD
Couldn't find a setting directly related to GPU power mode. The closest thing might be Radeon Chill, which I turned off just to check if it changes anything. Unsurprisingly it doesn't.