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Participant
November 12, 2012
Answered

Reader 11 very very slow

  • November 12, 2012
  • 4 replies
  • 74237 views

Hi

Ever since updating to Reader 11 I have found Reader CRIPPLINGLY slow. PDF's will open, then freeze, then give 'not responding' and somtimes crash. If I am lucky, when I shut everything else down, it might cooperate if I am patient.

What's going on here?!!

I am on PC, Windows XP, 2002, Professional, SP3

Nightmare as I use a lot of pdf's...

Please help!

(Advised to update so by Firefox - if I recall correctly - as not to do so apparently left me open to security issues. Or possibly not being able to view flash on YouTube. Or maybe both. Sorry - just can't remember)

    This topic has been closed for replies.
    Correct answer bamijian

    @nmuleski: Thanks. Worked for me: Edit --> Preferences --> Security (Enhanced) --> Uncheck "enable protected mode"

    Now in stead of the 2 to 3 seconds it took when opening a pdf it is now very fast.

    I think Adobe needs to do something about that.


    This isn't quite how my menus read.  I have Edit -> Preferences, yes.

    Then I have Enhanced Security.

    Then I have Enable enhanced security and under that there is a bullet called Protected View.  I have set that to "off".

    Is that what you meant?

    So once I did that, YES SUCCESS  Acrobat is no longer chewing up all those resources.  Thank you so much.

    4 replies

    peters20279996
    Participant
    April 8, 2015

    I've bee trying to fix my slow Adobe Acrobat 11 on and off for three days. It took 1 minute & 45 seconds to open a 75KB PDF.  I fixed my problem by changing the compatibility mode from Windows XP (old OS) to Windows 7 (new OS).  It is now lightning fast.

    Right click on the Adobe Icon, select properties, and see if you are in the correct compatibility mode.

    bamijian
    Participating Frequently
    May 13, 2015

    I am having this problem and Acrobat is chunking up like 25% of CPU performance and 28% of memory whether I open something on disk (regardless of size) or over the Internet (I have broadband).

    I wish you would give that last instruction better because I have no idea where you're looking.  Under File -> Properties?  Which tab?  The  only compatibility mode discussed in the online manual has to do with printers AFAICT.

    is also interfering with other applications of course, when it chews up so much of the resources.

    Thanks.

    Participant
    January 25, 2013

    Hi WineFerret, When you are experiencing the slowness, open task manager to see what program is using all your resources.  Click start, run, type taskmgr in the run box and that will launch task manager.  Now click the Processes tab and look to see which process is in the top spot.  Whatever is in the top spot is what program is slowing down your PC.  I found some great tips to speed up your PC at http://www.computer-repair4free.com/speed-up-my-computer.html  I followed the tips and noticed a bit of improvement on my PC.

    November 19, 2012

    Hi,

    Do you see this with all your PDFs or it only happens when you access some heavy PDFs online.

    How do you open PDFs , on network or locally.

    Participant
    January 4, 2013

    Have you tried turning of Protected Mode?  I am having the same issues with Reader XI and it seems (like with previous versions of Reader) protected mode is to blame.

    Turn it off by going to Edit --> Preferences --> Security (Enhanced) --> Uncheck "enable protected mode"

    Warning: This is a minor security risk

    Participating Frequently
    January 16, 2013

    We are having this issue as well.  It appears to be a SUBSTANTIAL amount of disk i/o to the appdata directory - specifically the GlobData file in the JSCache directory.  Which isn't an issue for people with disk caching enabled on a local HDD, but is an issue for environments where %APPDATA% is redirected to a network share (like us) and every read/write by the 4 instances of reader are going to the network...  Simple actions like opening Reader XI or choosing the "enable all features" takes 45 seconds - 120 seconds.

    Wonder why the JSCache directory isn't in the %LOCAL APPDATA% folder structure.  ???

    Wasn't an issue with Reader X...  Also, all combinations of protected mode and enhanced security, enabled and/or disabled have no impact on behavior.  Also, nothing is actually crashing, it's just SO slow that we had to uninstall Reader XI and go back to Reader X...

    FWIW.

    pwillener
    Legend
    November 13, 2012

    I use Reader XI on both Windows XP and 7, and I do not experience any slowness.

    What Reader version did you use previously?

    How much memory (RAM) do you have on your system?

    Participant
    November 13, 2012

    HI Pat, thanks for the reponse (btw - I think you helped me out a few weeks ago when I was upgrading...?)

    To be honest I don't know which version I had.

    RAM - 2.96 GB

    (Dell Vostro 430, Intel Core i& CPU 860 @ 2.80GHz, 1.17 GHz, 2.96 GB of RAM)

    From memory I had a few problems upgrading and had to reinstall to work my way around a bug. Could it be this has come back (or never left..)?

    pwillener
    Legend
    November 14, 2012

    3GB RAM is certainly enough not to cause any problems with Adobe Reader, even with large documents.

    I suggest that you try a clean reinstall by

    1. removing the current installation using http://labs.adobe.com/downloads/acrobatcleaner.html
    2. then reinstall Reader using the installer from http://get.adobe.com/reader/enterprise/