We have ASA 5545, when we execute show run or show run | in ... , the session hangs and does not come back. this issue happen only in the active unit. The standby mode, session comes back immediately.
I did not have any high CPU, leak memory, overrun or any huge traffic on ASA.
But we faced a failover trigger process before 3 days, the active unit became failed due to interface failed and secondary became active. after that, the secondary failed and the active became standby unit.
Share the logs, If there are any logs generated otherwise connect to TAC team.