How can I modify Cluster Autoscaler reaction time?

I want to set a delay on GCP cluster auto scaler before adding a node similar to this - https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#how-can-i-prevent-cluster-autoscaler-from-scaling-down-non-empty-nodes

You cannot modify the parameters of the GKE cluster autoscaler. You can use annotation on your pods though. If you want to delay node scale-up, you should be able to use the cluster-autoscaler.kubernetes.io/pod-scale-up-delay annotation on your pod(s).