Thanks Allanx
My pc is not a super pc truth, so that the model does not weigh so much in separate scenes, for example, each interior is a different model.
Using an Intel Q 8400, 4 gigs of ram, video card and a gforce 9800 gt
to get good textures, at least for me there is one, it is cgtextures.com
clear that here in the forum there is also a section where users share different textures, models and other resources