No 24hz option since Kodi 17

I have been wondering for weeks why the motion on my movies has not been the same since i did a recent upgrade.. And today noticed that my TV is syncing at 60hz rather than 24hz.

In 16.0 I used to get 24hz out of my Pi2, but now I can’t find the option.. Under settings, I only have 60hz (+59.94hz)… There is no mention of 24hz anywhere.

I don’t know whether this happened when I went from 16 to 17, or from 17 to 17.1.. But either way, I can no longer output in 24hz… Does anyone know why? And whether its possible to re-enable it?

The whole reason I moved from a FireTV stick to a Pi setup was to get 24hz, so this is quite important to me…