Every scene, every material, everything always has these weird light rays on it UNLESS I SET ROUGHNESS TO 2.0 - vertical dark lines in 4k render How can i stop this??? what causes this?

Yeah, thanks. I’ve found my only solution has been to just essentially “cancel” out any lower roughness values. It’s super weird and frustrating.

One thing I did try –
If I set the screen percentage higher (like 200%), I don’t seem to get the same issues. Obviously the renders are slower but no big deal. Only downside is that I have to disable a lot of the post processing effects because i get a really obvious separation line in the final image where the “buckets” of the render show the seams.