Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Technical Issues [Mac] Extreme heat, very rapid battery drain

the Graphics Switching is intended to reduce power in normal use I suppose (when not playing).
I know that in 3D games the Intel HD Graphics increases considerably the cpu heat, so the fan speed, and so the battery drain. I don't know if you can configure the game to not use the Intel, but I found a tool that is supposed to monitor such things and select one video card. But be carefull I'm not a mac user and I don't know if it's safe : http://gfxcardstatus.en.softonic.com/mac