Pencil texture line not showing in render view

Hi all, I am using Harmony 22 (19025 build) on Mac Studio and for some reasons the pencil texture doesn’t show in the render view or exported .mov. Am I missing something quite basic in my settings? Also why my render view is blurry compared on OpenGL view.
Many thanks
Edit: it was indeed quite basic. I turned off anti-aliasing from the layer properties and it solved the problem. Cheers