Gitlab-runner long time for taking job

GitLab CI/CD
1

Why a lot of time spent before runner take a job? After push, job will start execute for around 40-60 sec.
In /etc/gitlab-runner/config.toml
concurrent = 1
check_interval = 3

[[runners]]
  name = "DevServerRunner"
  url = "https://gitlab.com/"
  token = "MY_VERY_SECRET_TOKEN"
  executor = "shell"
  [runners.cache]

[[runners]]
  name = "DevServerRunnerConsumer"
  url = "https://gitlab.com/"
  token = "MY_VERY_SECRET_TOKEN2"
  executor = "shell"
  [runners.cache]