motion コマ落ち

# Minimum time in seconds between capturing picture frames from the camera.
# Default: 0 = disabled - the capture rate is given by the camera framerate.
# This option is used when you want to capture images at a rate lower than 2 per second.
minimum_frame_time 0

ここが　1　だったから、どうしても　1fps　のコマ落ちみたいになっていた様子。いつ変えたのか？