For the life of me, I cannot figure out what is causing my battery to drain so quickly. I've been on this phone and this install of Graphene for over two years now, but only in the last couple of weeks has my battery been draining so quickly. It'll go from 100% to 50% in just a couple of hours, but seems like it's 15-20% drain per half hour of use.
It doesn't seem to be a specific app, as whatever app I happen to be using shows as the battery drain in the battery stats. Interestingly, it's saying my System (Audio) is the primary system culprit, even when I'm using things that aren't making sounds.
Any ideas for next steps? I'd really hate to do a factory reset if I can help it, as setting up everything all over again can be a pain.
Edit: Of note, my phone feels warm to the touch, as if it's really churning. But it will cool off if it's left alone, all my apps are closed, and the screen is off.