Create a multibranch pipeline project, check "Periodically if not otherwise run",
Set to 5 minutes - it's run every 12 minutes
Set to 1 minute - it's run every 2 minutes
Set to 2 minutes - it's run every 3 minutes,
Set to 10 minutes - seems to be 12 minutes.

Possibly other settings have similar issues, but I have not tested them.

Sample pipeline code https://github.com/kpakur/piepline-triggers
Also a test script there that does commit and push every 30 seconds to simulate traffic on the repo so the changes should be picked up.