A more FPS friendly and VAS friendly version of New York is in the works by Drzewiecki Design. The product will we available for FSX, FSX:SE, P3D v1, P3D v2, FS2004 and lastly X-Plane 10 which will come later.
See what they posted on Facebook below:
“Work goes on with New York City X v2 featuring huge performance improvement, complete night textures overhaul, ultra high resolution mesh and almost half a thousand buildings done from scrach (not visible on the screenshot). All of these compatible with FSX, FSX:SE, P3Dv1 and P3Dv2. FS9 and XP10 versions will come later.”