Hey ,
I think I might have got the reason for those blocky patches. Although, I’m not completely sure but I think it is the selector node in WM just before the ground and the snow output. I think it causes the edges to be a bit sharp, that’s why may be the material looks pixelated at the edge of each material where the blend should take place.
Cause I’ve tried building a map with ~20m/pixel with three layers this time around. One without selector node and the other two with selector.
The one without selector node gives me a smooth blending, whereas the other two gives me the same pixelated look at the point of blend.
I’m gonna try that first thing tomorrow.
Please let me know what you think.