Jenkins pipeline does not start right after clicking the button

Issue

• When clicking the start pipeline button on the openshift console to run the pipeline and start the build process, it takes 2 to 5 minutes before it actually starts.
• Reproducible steps

# oc new-project dev --display-name="Tasks - Dev"
# oc new-project stage --display-name="Tasks - Stage"
# oc new-project cicd --display-name="CI/CD"
# oc policy add-role-to-user edit system:serviceaccount:cicd:jenkins -n dev
# oc policy add-role-to-user edit system:serviceaccount:cicd:jenkins -n stage
# git clone https://github.com/OpenShiftDemos/openshift-cd-demo.git
# cd openshift-cd-demo/
# oc create -f cicd-template.yaml 
# oc new-app --template=cicd

• Click on start pipeline button in the namespace where the pipeline is defined and record the time taken by it to initiate builds.