Wierd stripes everywhere in 5.7

Hello! I’m trying to use UE5.7 for the first time and i see wierd lines everywhere, no idea why

Default light setup (they exist on None, Lumen and Screen space). Anyone has ever seen those or is it me just been blind and ue always had it?

They look pretty harmless until i try adding cel shading (green thing - cel shaded, defaul grid - usual shading, barely can see them)