Thats terrain isn’t it?
If so the answer would be “make it smaller” or raise the lightmap size, cause the lightmap spreads over quite some area for each chunk
Good god that took a while to finish. I upped the texture all the way to 4096:
So it looks a little bit better but still doesn’t look quite right. The shadow doesn’t really take the shape of the mesh properly, it’s kinda just like blob on the ground. See the areas I circled with red, the shadow doesn’t even start at the foot of the fence (I drew the black stuff over it - that’s how it’s “supposed” to look)
if you make all smaller you are back to step 1, cause the shadow will again not be accurate.
the only way to get detailed shadows is realtime shadows as they are not bound to the terrain size like lightmaps.
that or you overlay the terrain with mesh parts that are just there as lightmap receiver