EDIT: Every time you reboot, you’ve gotta go BACK to developer options and set the ‘Background Apps’ to =< 2. 😦
Oh man, was I suffering from a slow Motorola Droid 4. Switching between apps took MINUTES. It was awful. I’m running Verizon supplied Android 4.1.2. I was blaming it on Waze or Facebook or not enough RAM. Then I did some searching and boy was I wrong.
All you gotta do is:
“Settings” -> “Developer Options” and set all the “animations” to off. For good measure I limited background apps to 3 in number.
Now my phone is fast and wonderful. It’s great! If this helps you too, leave a shoutout!