I let it run overnight last night, and as far as I can tell, it worked fine. I'll know for sure after a few days, because there's occasionally a situation in my app that causes a significantly different elapsed time for some iterations.
Amphetamine has a lot of bells and whistles that you can configure in order to turn it on or off automatically with various triggers or a time schedule. I didn't bother trying to set up any of that. I just manually turned it on.
