Thanks FiFi, this is a clear answer.
But I think this is not a limit of my PC. I think this is the way how SH3 handle with it. But in next weeks I will upgrade my CPU from a Ryzen 3800X to Ryzen 5800X3D and my Radeon 5600XT (OC) to Radeon 6750XT (OC). 32GB RAM with CL14 on a X570 chipset should be more as enough.
Maybe I can push the „red line“ a little Bit with new CPU and GPU.
