Fantastic, thank you!!
Out of curiosity, does anyone know the practical difference between High and Ultra? I compared screenshots from the two profiles and they look basically the same to me; except instead of 120fps it now runs around 80fps.
Edit: Ok, found the config files… it seems the only difference is render resolutions? As best as I can tell zwift outputs screenshots in 1080p only so it might just be hard to see the difference between zwift-exported screenshots.