v10.2 beta - bug
I also confirm drop of hashrate (~ -100h/s) when monitor goes to sleep or is turned off. Same happens when TeamViewer disconnects. Only solution is to have monitor always on or TeamViewer connected.
VGA: 1x290x (HDMI), 2x280x
In v9.7 everything works normally.
I have 480's and notice the same drop but a lot more than 100h/s