Unity URP custom line shader rendering flickering/artifacts, especially at high angle and distance

Question

screenshot As you can see lines disappear at the end and it also flickers when moving the camera.

I am rendering these lines using shader graph UV node and smoothstep. there is nothing suspicious going on in the shader graph code so I have not included it.

I am using "Single" precision float.

I tried:

• Turning off every setting in the renderer but didn't work.
• Using bunch of smaller tiles instead of a single large floor.
• Using built-in renderer instead of URP.
• Rewriting shader in vanilla HLSL instead of shader graph.