Superjustinbros
commented
2 years ago 
In Project64, when using the GLideN64 rev.37c0994 renderer with anti-aliasing disabled or fast approximate anti-aliasing (FXAA) enabled, every nine rows of pixels in the drawing canvas is shifted down by nine pixels, causing an odd graphical effect shown above.
The lines disappear when zoomed in, and get the most intense when fully zoomed out (as shown above).