Could you please ask the dev team to add the 25 and 50 FPS option to the playback rate ?
I don’t really think that it will be difficult for them, as other rate already exist !
They could even add a “Customize” possibility !
Quite a lot of productions (mine included of course) are animated and rendered in 25 or 50 FPS, so it would be awesome if the playback could match these settings !
It is still possible to render the scene in 25 or 50 FPS by setting it in the Movie Capture settings (and it works), but it would be even better if we could preview the scene in the viewport at the matching FPS !