Generic Camera - lag

I am trying to use the “generic” camera component to view an RTSP stream that works well in VLC, but when used in HA it loads very slow and then has a 3 MINUTE delay.

Has anyone had success using this component/integration? Not much to configure and the debug logs do not show much other than the cam starting :

[] Started stream: rtsp://

Also, any ideas how to get more information from the logs?