Mysql stopped working while using this package

[nirmalgoswami]

Hi, thank you for providing solution to run cron every x seconds

Working fine : $schedule->command('abc')->everyMinute()
Not Working : $shortSchedule->command('abc')->everySeconds(60)->withoutOverlapping()

i want to run script every 20 seconds but short schedule was killing mysql server later tried with 60 seconds to debug whether it is issue related server or command, i find out that schedule:run working fine but short-schedule:run is killing mysql server even with 60 seconds

any help ? should i use sleep method with native laravel schedule command ? or any setting can be done with this package to prevent to stop mysql server