Research of Moodle cron performance improvement

Would it be better for cron to run in parallel using auto-scaling web tier?

Moodle supports cron running in parallel (there is [built in locking](https://docs.moodle.org/34/en/Cron#Running_cron_for_several_Moodle_servers)) for micro tasks. It is recommended that cron runs at every 5 minutes but some tasks could take hours depending on situation so shouldn't cron also scale?

It's also worth noting that providing a bigger controller VM might not help since Moodle's Cron reportedly does not use more than one CPU core.