1. System failure or maintenance: The medical insurance face recognition system may fail or be undergoing system maintenance, resulting in abnormal or busy use.

2. Network congestion: If a large number of users use the medical insurance face recognition system at the same time, it may lead to network congestion, thus affecting the response speed of the system.

3. The server load is too high: If the server load of the medical insurance face recognition system is too high, the response speed of the system may be slow or even busy.

4. Too many users: If a large number of users use the medical insurance face recognition system at the same time, the system may be busy and thus unable to respond to user requests in time.