Foliage Wind creating weird shadows on top of mesh

Hey guys, no luck for me, tried all the fixes from this thread - at least those I could understand.
I am using the Tropical Jungle Pack, and the only way I can make the foliage look normal, is by doing the evaluate WPO fix but that disables the wind totally. All the combinations with turning off nanite etc. do not help.
Plus, I am using Lumen if that makes any difference.

Can anyone help?