...to not have lag when editing in Lightroom? I have a maxed out Mid '15 MBP with dGPU which I spend ~3100 new. To be honest, is the next MBP revision still going to lag in crap like lightroom? Help me out here...because I'm keeping this MBP if I'm just going to be in the same boat. I mean this is a complete rant, why is it that when I'm using the touch up brush it takes 3 seconds for it to catch up to where I'm actually touching up and my fans are at full RPM. They are RAW files but still.