Importing Photogrammetry into Unity

 
 

Steps:

- drag/drop into Unity, rotate X by -90
- select the obj (in project folder, not in scene), and in the inspector, select "Extract Materials"
- once that's done, select the materials, and in the inspector, change their shaders to Unlit > Textures
- then select the textures again, and in the inspector, change their import res from 2k to 8k

And there you have it!