I'll try this to see how it behaves with aerial imagery. I remember trying it in the past but the texture size limit of unity was not allowing me to import a 36k + aerial texture import. Now I've the way to separate huge areal images in chunks of 4096 so the resulting resolution is 10cm perpixel. Lets see how it goes!. Ihope that appart from visible areas loading it does not load them at full res and there is a quality / discance control.