Scheduled job not firing on exact time

Tags: #<Tag:0x00007f235551d888> #<Tag:0x00007f235551d7c0>

Hangfire is not executing the scheduled job on exact time, it always firing few seconds later, sometimes even 30 seconds.
I’m using Sql Server storage with 5 seconds in QueuePollInterval.
I need that hangfire executes de job on exact time.

Is this a bug?