Most of the low speed is because of the vastly insufficient processor, but some of it will be because you are using an on board graphics card. I'd say that getting 20 FPS is an achievement to celebrate with that hardware.
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
