here is few prior posts i found for you that could help
Lighting
And that was with a brightnesses of 100% in the game. I have had this happen to my builds as well and usually the reason for that was that I forgot to dim the directional light of my scene to 0.85 as it should be for PG builds, and instead built with the brightness I used to be able to work in the scene.
There is a Dark Blackish cloud over my work area Shadows
which I usually have off while working.
Y About shadows: When I built my course I accidentally had the Shadow Type: OFF in the inspector for the directional light. Should be on soft shadows. ou should have cast shadows set to soft shadows
put a human height marker in your scene then double click it in hierachy to zoom to it, that will clear the cloud
As long as no such point is being officially defined, I will set my courses to work best at Brightness 100.
Also, If it is a new project, Unity adds it's own directional light with it's own default settings. I usually delete the directional light and then just add another one, then set intensity to around .8 or .9 in Unity while designing. According to Mike, Intensity shoud be set at .85 when building the course.
That sounds like your directional light properties -- you want it to be realtime. NoPutt was referring to the Lighting/Scene panel in the Window menu.
All looks ok to me except for the positions x,y,z
I suppose people use all sorts of positions and rotations,
but I use what the new CF with terrain uses.
Position x 562.8 y 51.58 z 857.3
Rotation. X 34.6 y 330 z 0
The white dots around your meshes are from anti-aliasing,
