Voxel Play 3 · Troubleshooting & FAQ
Shadows flicker in Scene View:
This is due to the near/far clip of the SceneView camera using wrong values which cause precision issues in the depth buffer.
To fix this just select any object in SceneView and press "F" to focus the camera on it. This will reset the near/far clip values of the SceneView camera.
Shadows flicker in Game View:
Similar to the SceneView, this could be related to a depth precision issue. Try increasing the camera's near clip plane to 0.3 or even more.
Here's a good explanation on how the near clip plane determines the precision of the depth buffer.