Black Artifacts and Jitter

Hi there!

I was running my first quick test using Unreal and deploying to Oculus Quest.
For some reason I am getting black artifacts and jitter on all my test levels.

Here is a short Video I recorded to show this strange artifacts:
youtu.be/Jjp8ekfTSwk


What am I missing here and how could I fix that?
Thank you so much for any little help!
appreciate it!