> Does anyone know, please, how to turn of texture streaming by default when I import the texture?
I think the latest preview has a bug where “Auto Virtual Texturing Size” will cause texture to have VT enabled, even if VT is disabled for the project. This will be fixed in final 4.23, but for now fix is to just make “Auto Virtual Texturing Size” very large.
> does this work at all on mobile?
Not in 4.23. It’s technically possible to make it work, so it should be supported in some future UE4 release.
> but when it’s smaller say 14,366 it says the virtual texturing is off
Virtual textures are required to have power-of-two dimensions. We should probably add some better logging or UI feedback to communicate the problem here.
> I also noticed I can’t seem to make material parents with the virtual textures as paramaters that I can swap a texture out in an instance
This should work, although texture parameters overridden in a material instance must match the VT status of texture in the base material. You can’t override a virtual texture with a non-virtual texture (or vice versa).