I have several IP Cameras Viewers on several pages all are JPEG Stills. Every once in a while the server will return a connection refused error. I have Retry Delay set to 5,000 and Connection Retries set to 9,999,999 but they never reconnect. The window must be closed are reopened.
Check the settings on the camera system. They may be a setting regarding connection time.
Does the camera allow multiple connections? If not, it’s possible the connection is blocked while the timeout is happening. Enlarging the delay in Ignition might be worth trying.