10-25-2014 02:16 PM
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  1. anon5658834's Avatar
    Hello there folks today I got a lovely new white Lumia 1320 which is all great and working well. Except for one thing. In Instagram,WP Central and a little bit in Facebook app when scrolling it jerks alot. It also does it slightly in 6 Tag. Is this a known issue and if so will it be fixed as its driving me mad in an otherwise great device. Is there any temp fix for it?? Never experienced this on WP before. Thanks
    07-02-2014 03:57 PM
  2. Connor Price's Avatar
    Check your ease of access settings. See if 'Screen Magnifier' is turned on. If it is, turn it off. It causes jerky scrolling on my Lumia 820, and my friends Windows Phones.
    anon5658834 and xandros9 like this.
    07-02-2014 04:37 PM
  3. anon5658834's Avatar
    Thanks I'll check
    07-02-2014 05:33 PM
  4. anon5658834's Avatar
    It was already off 😞
    07-02-2014 05:36 PM
  5. anon5658834's Avatar
    Ok Facebook Beta is fine and 6Tag only jerks slightly in the news feed. But WP Central News feed and Instagram Beta jerk horribly. I have 3.99GB internal memory left. I did read somewhere it is a known issue but will it ever be fixed??
    07-02-2014 06:53 PM
  6. xandros9's Avatar
    Have you tried a soft reset?

    (sorry, just a dumb question that can fix a lot)
    07-02-2014 07:57 PM
  7. anon5658834's Avatar
    No does that reset the phone to how it was??
    07-02-2014 08:36 PM
  8. Lance_WPCentral's Avatar
    This is a know issue with the L1320. Don't worry your not the only one. It happens on my phone too and on all L1320. I'm surprised till today Nokia (now MS Mobile) haven't fixed it.
    anon5658834 likes this.
    07-02-2014 09:17 PM
  9. anon5658834's Avatar
    Wonder why it happens in this phone?? Thanks
    07-03-2014 02:05 AM
  10. xandros9's Avatar
    No does that reset the phone to how it was??
    There are two main resets.

    Soft, and Hard.
    Soft doesn't erase anything, nothing lost, just like restarting your PC.
    Hard does erase everything, but thats not the subject here.

    Buuuttt it looks like there isn't too much we can do.
    anon5658834 likes this.
    07-03-2014 02:40 PM
  11. switch side method's Avatar
    I get this on my lumia 1520 too. Hopefully 8.1 will fix it
    07-03-2014 07:33 PM
  12. anon5658834's Avatar
    Ok I did a hard reset but the problem is still there. But the good news after a reset and setting all back up again is my phone doesn't get hot no more. Thankful we have 6tag for Instagram as it's a better app anyway than Instagram Beta. Facebook doesn't jerk but Games app and also WP Central news feed does.
    07-03-2014 07:44 PM
  13. switch side method's Avatar
    Thanks for the update Sean. Hopefully Microsoft will fix this issue with 8.1
    anon5658834 likes this.
    07-04-2014 06:49 PM
  14. anon5658834's Avatar
    Yeah Microsoft/Nokia or whatever. They should cos I've not seen any other WP have this scrolling lag it kind of ruins what is overall a great phone/phablet 😊
    07-04-2014 06:53 PM
  15. anon5658834's Avatar
    I lowered the image quality on WP Central app to medium and scrolling is now smooth
    07-05-2014 11:52 AM
  16. salmanahmad's Avatar
    If you could upload this error to YouTube to give us some more detail it would be great.

    My Lumia 520 seems to work pretty good in all the apps you've mensioned however I do experience this weird jerk in WPCentral apps sometimes, but ever since I set photo quality to medium, it's fine.

    I have been experiencing another issues related to scrolling, but they are due to slow CPU and GPU.
    Sent from my RM-914_im_mea3_380 using Tapatalk
    07-05-2014 03:02 PM
  17. anon5658834's Avatar
    I'll try to do a video. The worst is Instagram scrolling through your own photos, X Box games is terrible too good job I don't play games though. Facebook Beta is fine and there is a little bit of jerking in parts of 6tag but not much. Oh and changing from portrait to landscape in photos jerks slightly too. All else is fine but it's gotta be a bug
    07-05-2014 06:48 PM
  18. mjyumping's Avatar
    i don't experience this jerk in my 1320.
    may be just turn off some background tasks.
    07-05-2014 07:13 PM
  19. anon5658834's Avatar
    Well I've read it's a known issue with this device. And I only have 2 apps running in the background it's got nothing to do with it anyway. I read it happens on a few apps and sure it does. Do you use Instagram Beta or Games app?? That's where the worst of the jerking is
    07-05-2014 07:32 PM
  20. mjrtoo's Avatar
    Apps don't run in the background anyway.
    07-05-2014 07:35 PM
  21. a5cent's Avatar
    Well I've read it's a known issue with this device. And I only have 2 apps running in the background it's got nothing to do with it anyway. I read it happens on a few apps and sure it does. Do you use Instagram Beta or Games app?? That's where the worst of the jerking is
    It is notable that the Lumia 1320 is the WP device with the worst GPU performance / display resolution ratio (out of all WP devices).

    This issue also appears to have some relationship to apps that scroll images. The fact that reducing the resolution of downloaded images in the WP Central app alleviates the problem, suggests that this app (and possibly the others as well) might be screwing something up when it comes to down sampling images to a more appropriate resolution for the Lumia 1320.

    The default down sampling behaviour has changed between WP8.0 and the WP8.1 developer preview. Which of those are you using on your Lumia 1320?

    If you are using WP8.0, it is quite possible that the issue will disappear after upgrading to WP8.1 (no promise though). If that's the case I'd wait for the upgrade, or join the developer preview program. Otherwise let me know.
    Last edited by a5cent; 07-05-2014 at 08:14 PM. Reason: clarifications
    anon5658834 likes this.
    07-05-2014 07:52 PM
  22. anon5658834's Avatar
    It had the same issue on WP8 and 8.1 😒 It doesn't make sense if a Lumia 520 doesn't have such issues but the 1320 with better CPU and more ram does.
    07-05-2014 08:37 PM
  23. a5cent's Avatar
    It had the same issue on WP8 and 8.1 �� It doesn't make sense if a Lumia 520 doesn't have such issues but the 1320 with better CPU and more ram does.
    It does make sense. Both RAM capacity and CPU are almost irrelevant when it comes to UI scrolling performance (Well, RAM capacity actually is entirely irrelevant). That task is handled entirely by the GPU. The GPU in the 1320 is no stronger then the GPU in the Lumia 520, but it must push more than twice as many pixels. That is a huge difference!

    In that case I would write an e-mail to all three developers and ask them to test their app on a Lumia 1320. Be sure to mention that based on perceivable performance, they likely aren't scaling their images to an appropriate size for the Lumia 1320.
    07-05-2014 08:51 PM
  24. anon5658834's Avatar
    It does make sense. Both RAM capacity and CPU are almost irrelevant when it comes to UI scrolling performance (Well, RAM capacity actually is entirely irrelevant). That task is handled entirely by the GPU. The GPU in the 1320 is no stronger then the GPU in the Lumia 520, but it must push more than twice as many pixels. That is a huge difference!

    In that case I would write an e-mail to all three developers and ask them to test their app on a Lumia 1320. Be sure to mention that based on perceivable performance, they likely aren't scaling their images to an appropriate size for the Lumia 1320.
    Then how do you explain the extreme jerking in the X Box Games menu?? Not even playing a game the menus are horribly laggy
    07-05-2014 09:18 PM
  25. anon5658834's Avatar
    And also the jerky portrait to landscape movement when in gallery??
    07-05-2014 09:44 PM
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