Is there any idea how to fix issue async task did not complete within the requested time - 45s

My aggregation task will do these steps: 1. Gather /etc/passwd, gather /etc/group, /etc/shadow and last login then generated a flat file to send to a windows server. For each subtask in the playbook we set async: 45 so that the task has enough time to gather the info. For some linux server, the task fails with the error msg: async task did not complete within the requested time - 45s. I tried to increase the value of async, but the task still failed with the same error message such as
async task did not complete within the requested time - 240s. and cause the aggregation runs so slow. I checked with SA and they found nothing wrong when compare with other working servers. Is there any suggestion to fix this issue?