Landscape Texture from Render To Texture 3ds max?

I’m doing a cartoon looking landscape. I exported it to 3ds max and vertex painted it, then rendered the vertex paint as a texture. How can I then apply that texture to the whole terrain inside UE4? Its per face at the moment, I need it to apply to the whole terrain not per face. I just need it to be like a plane uv map over the whole landscape terrain not per face.

Thanks.

Checking the terrain resolution in manage terrain. Which was 225x225 and then setting that to the materials landscape coordinates mapping scale to 225 did the trick.