In Fully the camera stream which works fine in AT turn black. The streams work in IP cam and on blue iris without issue so it is isolated to AT and fully. If I refresh my cameras they come back.
Tested in fully and Chrome browsers with the same issue. I changed the refresh rate to 900 and change to still images per Terry.
If you post the exact details of your configuration (including the camera brands, models, URLs; number of cameras on the dashboard, ...), the exact problem (how long does it take until the camera goes black, have you tested with fewer cameras on the panel, ...), etc., etc., then that increases the chances of getting helpful customer peer-support assistance on our Forum and the SmartThings Community Forum
I have a Wyzecam, LaView, Amcrest, Annke and Foscam.
I am using the Blue Iris Server stream settings http://IP:port/mjpg/camshortname/video.mjpg
It's takes a few minutes until the tiles go black. I test with two and 5 camera. Same results. One tablet running Fully and the other chrome.
Customer support service by UserEcho