or Both even, Yes it is likely that you have just enough power to record a smooth stream but not to veiw it for a set period of time at the same time if your trans is a standard builders grade at 16V 10A then that is likely the problem So if that is your case I would start their look for a 16V 30A if planning to only run the one DB or if you plan to ad a second in the future go ahead and pick up a 24V 40A to be future proof
For sure it's builder's grade. I'm just wondering if this is the case, why live view in the browser worked great and totally smooth.