I was under the impression Spalart-Allmaras was RAS so I think so. I was told to aim for a y+ of 1 by my supervisor but I suppose neither of us considered that I should take a look at exactly what wall functions are being used And while I haven't checked the aspect ratio of my small faces I'm sure that the aspect ratio is very large (first layer is ~3 microns tall and 0.125mm long) because I'm working with a relatively low-resolution aerofoil coordinate file It sounds like I'm experiencing literally everything you're saying is a problem