I tried doing a search and looking through the threads but I can't seem to find out how to clear the cache on the Droid Maxx. I know how to do it on the Droid Razr Maxx, but that didn't seem to work.
I have the X but since it basically runs the same firmware try turning the phone off. Hold power plus volume down for a couple seconds and release. You should see a menu, use volume down to highlight recovery and press volume up to select it. At the next screen press power plus volume up at the same time for a second or so and you should see wipe cache.