I updated to 4.2.1 right before I rooted my N7. Ever since I've been getting an off and on jerky movement when flipping through home pages, when playing games, etc. My battery also sucked up 5% in sleep mode overnight with wifi on. Over half of my RAM and cpu is free and it is still jerky. I have Elixer2 installed but I'm not sure if that is what I need to determine what is causing the issue. I also have a hunch that it is something using my wifi. Can you please recommend an app to see what causing the issue? Edit: If I disable wifi, shutdown and then restart the N7 everything is fine.