Shadows on floor

Hi everyone, I’m sorry for constantly posting questions on here…!
I seem to get these strange square shadows on the floor after I build my lighting and I don’t know where they’re from, I’ve increased the lightmap resolution on my floor and hasn’t changed, any thoughts?

I have this on some landscape. Would also be interested to see what comes up here.

Just out of interest what are you skylight / directional settings? ( ie, static / stationary / dynamic )