Zabovis Many thanks for your support. I managed to do it in the meantime. It was actually a mix of missing swap and the Mesa drivers.
For the Mesa drivers, I downloaded the driver package from the github source for Nobara 36 from noob404 and replaced all Mesa 23 there with the Mesa 22.2 packages.
Then uninstalled mesa,libdrm and xorg-x11-drv-amdgpu.
After that installed everything from the above package. After that everything finally worked. Unfortunately, I only get to test something on the weekend, so please excuse my long response times.