I Disabled SMT again and switched back to DX11. I get more fps with DX11. Installed MSFS2020 again and thats what i get now without any mods, no world updates and no live traffic.
SMT Diasbled makes a difference of like 3-5 fps and i get like 5-8 fps more with DX11.
What are your traffic settings? Boats, Cars…mine are all at 100.