Are higher beat movements easier to adjust and regulate when compared with lower beat movements? I would define "high-beat" as 28,800 vph and higher.
Are improvements obtained from refinements such as variable inertia and free-sprung balances, Breguet overcoils, etc. more observable with low-beat movements?
Is there a law of diminishing returns with respect to accuracy (positional and temperature variations, too?) with these refinements as you "up" the beat rate? And, if there is, what is the threshold beat rate?
I know that variations in timekeeping rates with temperature variation are combated with special alloys for the balance with a low coefficient of thermal expansion, and positional variation with free-sprung balances and Breguet overcoils (isochronism problems with special mainspring alloys or multiple barrels?). Does beat rate also effect positional and temperature variations given all other things are equal?
I look forward to a lively discussion ...