Amount of 0.5 on something that has no motion blur is like 180 deg shutter.
For a live-action filmic look, normally DOP of 24P movies shoot with a 180 deg shutter (1/48 shutter at 24P) – that is part of the film look. And it so as projectors historically had 1 frame on – 1 frame off cadence. And your eyes are supposed to like that better.
Sports people usually deal with 60 FPS (1080i or 720P) and often use 360 deg shutter (1/60 shutter integration time (or 1/50 in Europe) ).
Since stop-motion motion blur is animation, so it’s subjective as you can use this to accentuate motion.
Pierre