Grids, Switch, White Whale and, EarthSea power issue

I am using Switch to power Grids and toggle between White Whale (Orca) and Earthsea. My 104hp 6u system is powered by 2X 4ms row 40’s bridged off one power brick. I thought this would provide sufficient power to all the modules in that rack and that Grids would draw most of its 5v requirements off Switch. I am guessing not though as Grids will only occasionally power and will stop responding during playback during the times it does power and run. My rack without WW or ES requires only 1135 +12v and 775 -12v with no other 5v requirements. Am I missing something obvious?