I encounter some strange issue in my scene after building the lighting. Non-sense variation of shadows can be spotted on the meshes. It looks like something cast shadows randomly on the surfaces. I’ve checked my lightmap coordinates and everything is ok and the resolutions are quite high (between 512 and 1024). On Shadow maps the stranges shadows can be easily spotted.
What can be the reason of such behaviour ? I wonder if the IES are the reason of the bugs because IES seem to have been modified since the 4.22 version.
If anybody have any suggestion i would be more than happy !