As NameLessGO said, I suggested moving “Optimize All Presets” to a different place, but instead Dae changed the text to "You can optimize all presets at once by using the dropdown button next to “Save”. You will see that change in the next Anki release (currently in beta), though idk about AnkiDroid.
And yes, it is the same as “Optimize”. It just runs the optimizer on all presets, one by one.
Is it possible to have an option so the fsrs gets automatically updated regularly so you dont have to do it manually? For example each month or every 3 months.
Dae said that it could cause synchronization problems, but in the future, there will likely be a pop-up to remind users to optimize parameters if they haven’t optimized them for a while.