Hi,
Could you please download and send me the troubleshoot file after this issue happens? System > Administration > Troubleshoot
Send it to me via private message please.
Also, could you please tell me if the graph we see, are you trying to view it through RMS connect functionality to WebUI, or have you also checked the device locally? We need to know if this is RMS only or it's happening when looking at the graph locally in WebUI.
EB.