As we suggested was possible, your GPU's clocked down. Either set it to high performance in the nVidia control panel (recommended), set the IR to ridiculous levels, or set the texture cache to safe.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56