I imported street Shapefile (not big, less than 10MB ) into CityEngine and it became really slow that I couldn't proceed. I tried to import only a small portion it got better but was still slow. Is there a way to free some memory or get away with this? Thank you!!
Could possibly be too many vertices in your shapefile street centreline.
You could run Simplify Line in ArcMap before you export the shapefile and that might help.
ArcGIS Help 10.1
Guys after I changed to a 90GB server the problem is solved.
In case anyone is interested in the future:
I did tried to simplify Line and it helped a little bit, not much. If you want to render faster you can just turn off the street layer.