`queue.publish` span takes very long without any clear reason

[pataar]

How do you use Sentry?

Self-hosted / on-premises

SDK version

4.5.1

Steps to reproduce

1. We have a job that spawns multiple jobs
2. The 'spawning' job takes very long, due the cause of the queue.publish span

It's not really sure why. Any idea?

Expected result

This should be instant.

Actual result