Having big difficulties with lighting - mostly using only one dynamic light (moveable directional ligth - the sun) but its giving 30-40ms hit with my 4km*4km map. Is there something I could do to tweak the issue? Does landscape material affect - using tesselation much (with low fading distance).
EDIT: Getting better - found out how fast LODs and mesh amount also affect on lighting. Had also heavy basepass. Getting better, but all tips still wellcome.