Lines are disappearing and merging as I zoom out

I have a 2D, top down game. I have a map, which must have a 400x100 grid on it. I used Line Renderer to create this grid, and the grid is perfect other than as I zoom out, the lines seem to merge together or even disappear. Is there anything I can do or use that will help the lines of the grid to stay in the view?

Well I feel stupid now, but if anyone in the future ever has a similar issue, just set your MSAA setting in the camera to “Use Graphics Settings” and go into your graphics settings and turn it as high as is needed

does pressing the middle mouse button on the scene view help?