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How to fix extreme lag after updating your ASUS Nexus 7 to Android 4.2

jelly bean small - for some reason we don't have an alt tag hereSo, you’ve updated your ASUS Nexus 7 to the latest version of Jelly Bean, Android 4.2. You love the new features, but you’re disappointed at how slow your tablet seems to have become. Previously, it was extremely fast – buttery smooth – but now, it’s nothing but lag.

Don’t despair, as there are several things you can try to bring your tablet’s performance back up to where it should be.

Method 1: Give it some time to “settle in.”

I thought this was bogus, but I’ve noticed that on the Nexus 7, it really does help if you give your tablet a few hours to adjust to the new update. I’m not sure why, but when I set it down for a few hours and returned to it later, the performance was notably better.

Method 2: Clear your caches.

Reboot your tablet into the bootloader by turning it off, and then pushing the volume down + power buttons at the same time. Then, use your volume buttons to select the recovery. If you’re on a stock recovery, wait until you see the Android with the red exclamation point, and press volume up + power at the same time. Select the option to clear your tablet’s cache, and then wait for it to reboot.

If you’re on a custom recovery, simply navigate to the appropriate options, and clear all your caches that way.

Method 3: Delete multiple user accounts temporarily if you’re rooted.

This is ultimately what fixed the lag problem for me. If you’re rooted, and you’ve set up multiple user accounts, this is probably what will help you the most, as well.

First, navigate to SettingsUsers, and delete any additional users you’ve set up (don’t worry – you can set them up again later). Then, make sure Voodoo OTA Rootkeeper is installed, and that a root backup as been created. Next, uninstall your Superuser app (in SuperSU, select the option to “Reinstall: Cleanup for reinstallation from Google Play”). Reboot your tablet.

Once it has booted up again, reinstall your Superuser app from Google Play, open it, and ensure that the correct binaries are installed. Then, open Voodoo OTA Rootkeeper and select the option to “Temp. un-root.” At this point, while the device is temporarily unrooted, you can re-add all of your multiple user account. Then, after this is done, you can enter Voodoo and restore root.

Apparently, there are currently issues with Superuser access and multiple accounts that are in the process of being resolved, and that appears to be the source of lag for many rooted users. Like I said, this third method is ultimately what gave me the best results, but as always, your mileage may vary.


I’m still experiencing a bit of lag here and there, which didn’t previously exist, but after trying all of these methods, my experience with the latest update has been much better. Be sure to try this out yourself, and let us know how it works out for you!

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John F

John was the editor-in-chief at Pocketables. His articles generally focus on all things Google, including Chrome and Android, although his love of new gadgets and technology doesn't stop there. His current arsenal includes the Nexus 6 by Motorola, the 2013 Nexus 7 by ASUS, the Nexus 9 by HTC, the LG G Watch, and the Chromebook Pixel, among others.

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8 thoughts on “How to fix extreme lag after updating your ASUS Nexus 7 to Android 4.2

  • Avatar of Aaron Orquia

    I didn’t have any lag after updating to 4.2, but my Nexus 7 is stock and the update applied automatically. That shouldn’t have any bearing, but perhaps something about the manual install causes cache problems. (Of course, I did install the 4.1.1 update manually, without issue.)

    Anyways, I’m actually finding 4.2 to be faster than 4.1, and quite enjoying the new lockscreen widgets and notification settings shortcuts.

  • I wish they would fix the maddeningly annoying Google Play Store bug. I still haven’t been able to update or install a single app since installing 4.2.

  • BTW, one of my N7’s is not rooted, and the multi-user feature brought it to a crawl. Removed the users and it was then much faster. Additionally, the device screen rotation, when viewing the lock screen, is dreadfully slow. Was not prior to 4.2.

    Turning multi-user off is not a big deal for me. I was really hoping I could use additional users that have limited function of my existing Google account. Having to have them use a new account defeats the purpose; for my intended use, anyway.

  • Avatar of Nick Whiteley

    Paul. I had a problem updating apps from the Play store right before and after my 4.2 update – they would all fail. To fix this I had to delete the google account from my device (in settings -> accounts). It went through a whole load of re-downloading stuff afterwards and I had to log back into my account in a few apps but I lost not data and within an hour I was back to where I was but not only did app updates work again, but things like slowness I was experiencing in the G+ app loading times were all resolved, everything is fast again. Not sure if your issues is the same as mine was though…

  • Avatar of Nick Whiteley

    I obviously added it again after deleting. Sorry, should have mentioned,

  • Avatar of Rafee

    Try disabling background sync on current.Go to Currents>Settings>Enable Background Sync.Take the tick off & reboot.This solved the issues for me

  • My lagging issues arent too bad, but disabling Currents, google now didnt really help. Mine was mainly when I was trying to tap or interact during intense gaming or fast interaction like homerun battle. The screen no longer registers the tap as fast as it used to, its about a milisecond slower but enough to make it difficult to play the game and many others. I did not have this issue before updating to 4.2.1. And yes i have done two factory resets, and stop synching with currents and google now and turned then off. It still lags when playing certain games.

  • Mine was extremely lagging after jelly bean. It completely freezes when installing an app. Play store and a various apps stop response in different situations. It seems improved in great deal after I did a factory reset.


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