Thanks guys!
I did some testing and changed settings even to Ultra now and enabled the DEV mode to see the bottleneck. With Ultra and Render Scaling at 100 it of course switched between CPU and GPU. Changing the render scaling to 80 and settings back to high, it was mostly the CPU bottleneck as a few already suggested.
The Memory was mostly fine, so I cannot see why need more than 16 right now. The only upgrade could be maybe to an i7 11700 or i5 11600, but perhaps better wait till DX12 support.
I just need to find the sweet spot now for the settings, since some have a huge impact on performance of course, but others will make the game look terrible - I don’t like when the cities look ■■■■■■ and it takes time to load them. I think terrain level detail has a huge impact on how it looks.