IPCamera , Dahua : Only Camera 1 is continuously streaming


I am using IPCamera binding to connect my dahua cameras. I have set up all the value as mentioned in the page. Also in DVR i have setup all camera sub stream to low resolutions. However, only CAM 1 is streaming continuously. Other camera keeps disconnecting and reconnecting randomly. Any thoughts?

I am running my openhab on raspberry.

Pause the working camera to keep it out of the logs,then enable only on ne camera and set the log level to TRACe