I'm experimenting with custom substance maps now, and my nice green RGB substance map gets processed it places nice, orange spots all over my map. Upon uploading to my server and taking a closer look, its plain old soil. Not forest, not fertile, just plain old soil.

Is it perhaps, that my export settings are wrong, and its reading my green as perhaps red, and placing steppe?

My heightmap editor of choice at the moment is gimp 2.10.

*Looking again, my export sent out a white substance map, which im guessing it just reads the R, skips the G, and the B, and moves along. Need to find a fix.