Performance on multi cronjobs

[liho00]

    Cron().schedule(
        # Turn off logging for job that runs every five seconds
        Tab(name='first_job', verbose=True).every(
            seconds=5).run(my_job, 'first', seconds=5),
        Tab(name='second_job', verbose=True).every(
            seconds=15).run(my_job, 'second', seconds=15),
    ).go()

as shown,

2022-11-16 12:13:40,003 [35667] INFO     first_job: Running first_job
args=('first',) kwargs={'seconds': 5} running at 2022-11-16 12:13:40.003657
2022-11-16 12:13:45,004 [35667] INFO     first_job: Running first_job
2022-11-16 12:13:45,005 [35668] INFO     second_job: Running second_job
args=('first',) kwargs={'seconds': 5} running at 2022-11-16 12:13:45.005105
args=('second',) kwargs={'seconds': 15} running at 2022-11-16 12:13:45.005147

second job always slower than first job, I am willing to PR but I have no idea how to improve it, @robdmc could you share me some though on how to improve this to become asycn process task?