Job waiting (pending) for runner too long

Hello,

I have a machine with 3 custom runners installed on it and a check_interval set at 2 seconds.

The problem is that whenever a new pipeline is started, the job sits at "pending" for 3-4 minutes before actually being started by the runner.

Expected behavior: The job should start building a few seconds after the pipelines is created and not a few minutes later.

My setup

When i check the runners interface I have:

And then when I click on each runner it says "Last contact 5 minutes ago".

My toml is :

concurrent = 1
check_interval = 2

[[runners]]
  name = "ddf-runner-java"
  url = "https://gitlab.com/"
  token = "TOKEN"
  executor = "docker"
  [runners.docker]
    tls_verify = false
    image = "gitlab-runner-java:alpine"
    privileged = false
    disable_cache = false
    volumes = ["/cache"]
    pull_policy = "if-not-present"
    shm_size = 0
  [runners.cache]


[[runners]]
  name = "ddf-runner-node"
  url = "https://gitlab.com/"
  token = "TOKEN"
  executor = "docker"
  [runners.docker]
    tls_verify = false
    image = "gitlab-runner-node:alpine"
    privileged = false
    disable_cache = false
    volumes = ["/cache"]
    pull_policy = "if-not-present"
    shm_size = 0
  [runners.cache]

[[runners]]
  name = "ddf-runner-aws"
  url = "https://gitlab.com/"
  token = "TOKEN"
  executor = "docker"
  [runners.docker]
    tls_verify = false
    image = "gitlab-runner-aws:alpine"
    privileged = false
    disable_cache = false
    volumes = ["/cache", "aws-config-vol:/root/.aws"]
    pull_policy = "if-not-present"
    shm_size = 0
  [runners.cache]