Strange lighting and texture issues

I have strange lighting and texture issues in UE5. Foliage is flickering and and has a jitter. Some textue like the ground texture are looking bad and on motion it seems the texture are moving a little bit in u and v direction. And on some objects are wrong black shadow like artifacts.

These are all 4k textures and optimized with mipmaps!

foliage is looking bad and there is jitter:

here is bug on the clear sky:

foliage is flickering at distance:

Anyone has an idea what could cause these issues?

I have enabled lumen and tsr but after changing these methods there is still no better result.