[away3d] Texture size impact on performance?

[Stan]

Hi

I'm working on a project where a 3D model is imported from 3DS Max. I
would like to improve performance (FPS and memory use) of my model.
Should following make a positive impact on performance in Away3D:

Using 512x512 texture bitmap instead of 1024x1024?
Using UWVunvrap instead of UWVmap when i put textures on the mesh?

Thanks!