I would recommend to re-assign textures in 3ds max or rhino. I keep my imagery as a geotiff file that can be imported in InfraWorks and resaved in regular tiff to be used as a plain texture in 3d software.
InfraWorks tiles everything in a terrain when it has any texture, and the textures after tiling get tiny blurry edges. So I usually export a terrain from IW without any textures and I reassign an initial texture in 3ds max. Only this way assures a good quality of a model for further rendering.
However this can be too tedious for you and there is a legal issue with using satellite imagery outside the dedicated software.
You could use Surface textures from C:\Users\%User%\Documents\Autodesk InfraWorks Models\Autodesk 360\%Your model number%\Your model name.files\Resources\TerrainTextures\... I have managed to open a file with a *.dds extension while changing it to *.jpg. Thus you could process these tiles in Photoshop if needed
Евгений Ширинян