Strange shadow effect/lines

Hi. When I put “Ultra High” shadows on I get some strange lines on some textures if I change to “High” I the lines dissappear but the shadows look more blocky and ugly. Below is a picture. This is taken at the Elysian Hold in Bastion.

http s://imgur.com/6xVoAoF

My gpu is GTX 1660 super and I got the latest drivers. I checked on my laptop which has an AMD card. And these lines are present on both GPUs.