Is there a way to turn the screen off while the macro runs? Some of my macros run all night long, and I'm thinking my screen is going to burn up. I tried the 'sleep screen' a couple of times, but if I recall correctly, the macro gets stuck if it has to click on found image and the screen is off.
Internal or external?
If external you might be able to get away with turning the monitor OFF, but I have not tested this.
Another option is to turn the screen brightness way down.