Reliable way to render wireframe over meshes?

[mawa]

Did you try to change the zOffset on your wireframe material

Flickering on moving

I did see the flickering, this was being caused by the edge lines z-fighting with the material. By tweaking the material’s zOffset property, I could eliminate the flicker: Flickering on moving | Babylon.js Playground (babylonjs.com)

May be it will do the trick?