Latency of HLS produced by shake-packager is high for live streaming >5 s

[Herajy]

System info

Operating System: <Ubuntu 20.04>
Shaka Packager Version: <v2.6.1-634af65-release>

Issue and steps to reproduce the problem

./packager 'in=udp://127.0.0.1:10007,stream=video,init_segment=h264_360p/init.mp4,segment_template=h264_360p/$Number$.m4s,playlist_name=h264_360p/main.m3u8,iframe_playlist_name=h264_360p/iframe.m3u8'
--segment_duration 1
--hls_playlist_type=LIVE --hls_master_playlist_output master.m3u8
--preserved_segments_outside_live_window 4
--time_shift_buffer_depth 4 \

Extra steps to reproduce the problem?
(1) start the packaging
(2) play master.m3u8 into shake player

What is the expected result?
latency of produced hls is less than two seconds

What happens instead?

The best latency I have produced using the above command for live streaming is 5- 6 seconds which still high

ffmpeg Input command:

ffmpeg -i rtmp://localhost:1930/live/test -codec copy -bsf:v h264_mp4toannexb -f mpegts udp://127.0.0.1:10007;