How do you do Co-Op Livesplit timing? I've seen it in some speedruns for Co-Op so it is a thing. I know how to get Livesplit working with the Co-Op splits but you have to do it manually and isn't very accurate.

if you use sar + livesplit it should work normally and accurately; remember to use the commands
sar_speedrun_smartsplit 0
sar_speedrun_offset 0
sar_speedrun_category Coop

and ofc enable the autosplitter in Edit Splits

What does the command: sar_speedrun_smartsplit 0 do?