The stars don't relate to speed. 4* means it is playable on a powerful system, with minor bugs. 5* means it is playable on a powerful system with no gameplay damaging bugs. You may occasionally see black textures etc, though.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 48GB
GPU: Radeon 7800 XT
CPU: AMD Ryzen 5900X
RAM: 48GB
GPU: Radeon 7800 XT