Hello, I recently upgraded my Dvr to a 16ch Dvr so I could add more cameras, When I add more than 8 cams, one of the other cams instantly goes off of or the cam Im adding flickers and doesn't stay on, I've tried multiple camera types, and cables (It doesn't seem to be an issue with the cam brands as will even do it with the original floureon cams I already had) the Dvr - https://www.ebay.co.uk/itm/173987366143?hash=item28827484ff:g:hNEAAOSw3ZhdSCzw