Did the project I posted work at least?
Also there is a way to visualize the distant fields in the viewport: click on top of viewport, Show->Visualize->Mesh Distance Field, and the screen will show how the meshes distance field will look like. If this does not work and all are the same, the only thing that remains that I know is that Distance Fields are disabled at Low and Mid scalability settings, it will only work starting on High settings.
I would not say that in game developments things just stop working, this is accurate. What we can assure right now, is that there is something different between setups that we didn’t catch yet.