Hey guys, I'd normally search but it's currently down, I'm trying to not have the dedicated GPU turn on pretty much at all while I'm on battery, but I enough random work in Photoshop that I have it open more often than not. I've noticed, however, that whenever PS is running, I seem to get like, 2-3 hours of battery life no matter if I'm using it or not and I'm thinking its the dGPU being enabled (which it is, about this mac shows Iris Pro with PS not running and 750M with PS running and idling). I remember it being talked about before, but what's the tweak I can run to force the onboard graphics to stay active instead, and does it work with the Haswell models? I'm about to board a plane tomorrow for a family emergency across the country and need to finish up the work that I'm going to be displaced for while on the plane - 2-3 hours won't cut it for battery life. Thanks in advance.