title: aws ECS- Farget task submition pending time
body: <p>we have an ECS fargate cluster,that we have just created, and when testing, we noticed, that the submission of a new task takes about 2-3 minutes (PENDING to RUNNING).
  since we run there a new task every minute, it's not good enough for us.
  is there any way to optimize the PENDING to RUNNING time?</p>