How fast can job be deployed and how fast can we get notified about it?

When deploying batch jobs it takes a lot of time for Nomad to place and handle the job. The job itself takes a few hundred milliseconds and it uses a custom driver. The placement takes cca 350ms and polling for the info about the job availability takes around 450ms.

We are running cluster with 3 servers, but this happens even if we test this with a single job. Is there any Nomad config that could affect this or anything to make this faster?