FS2024 1.4.18.0, never seen these… runway length, equally spaced, faint white lines?
Not sure what is happening here, those white lines seem to exist whether runway material, ground merging, coloration is on or off, or which material is selected, or if there is or isn’t any aprons or poly beneath it. I tried turning off the runway markings and every other runway options, to no avail as well. Even played with the terraforming falloff distance without luck 
In case anyone else runs in, not sure why it did it, but I ended up using Runway_Brick default texture and transperancy with an underlying apron and the lines were not visible.
Those lines are in the texture you chose. They represent the seams created for each lane of asphalt laid down. Different textures have different setups.
Hey @robsl3e ,
I can’t manage to reproduce the problem.
Where did you place the runway (it is maybe linked to the environment)?
