Actually, I'm pretty happy with the scenery, since with 100% custom-buillded extensive traffic with bunch of separate liveries I have strong 18-20FPS from PMDG747 VC and up to 30FPS in Spot View.
The only thing that makes me crazy is very long initial loading times for textures, especially ground textures. Perhaps the problem is high resolution of these textures and maybe there is a way to convert them into DTX1.
Thanks
Dmitriy