Black tiny dots everywhere UE5



so the horizon has this black lines/ dotty. and not to sure if you can see the dots in the shadows doesnt really show on a screen shot. but zoom in on the legs in the shed (pic) you can kinda see it.

also TRS works best for me the rest throw jaggy lines

so what ive done.

open ue5/New thirdPerson
open new open world. drag and dropped asset.
oh blur/grain ive turned off.
im not to sure but because i can not build all levels i can not change the shadows from preview maybe thats doing it?
if i didnt crash everytime it finishs HLODS i could find out.