How to fix stripes and artifacts in orthographic view?

Hello. I have strange stripes and artifacts on meshes when I’m using forward shading and orthographic view:


How can I fix it?
I’ve tried to play with vsync settings in ue5 and nvidia control panel - no result.
Tried to use default camera actor with orthographic view and cine camera with this logic:

-still have artifacts and stripes.
The problem is in my post process material for outlines:

And I suppose the problem is in texcoord node, but I don’t know how to fix that material.