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Flash is extremely laggy on Firefox

Posted

(I'm not very good at English, if you don't understand something of my problem description please tell me) I just decided to give another chance to Firefox and move from Google Chrome and this time I found that Nightly (version 18 for the time of this question / out of using Firefox, Firefox Beta and also Aurora), worked with a really good performance and support for complements and to be really fast on my daily stuff, my only problem is that once I tried watching videos on YouTube or doing any other kind of stuff that required Adobe Flash Player (version 11.4 at the time of this question) it just freezes, the browser gets really laggy and Nightly starts to eat about 70% or more of my CPU, throught it doesn't crashes and it's just painfully slow until I can close the page with some luck. Now, I wanna start by clarifying that this happens to me in all the browser iterations like Firefox (15), Firefox Beta (16) and Aurora (17), not just in Nightly (18). By the other side in Chrome (version 22 for the time of this question) this never happens to me, the videos are pretty fast and the performance is fine. Also this problems just appears to happen when I'm using it on the page. If I put a video on fullscreen it goes plain smooth (even better than with Chrome), but once I get off fullscreen the lagg starts again. I recently updated Flash to try to solve this and also reinstalled Flash, non of this worked out and I don't know that else could I do. Also wanted to add that I'm using Windows 8 (Release Preview) and my PC runs on x64, since Firefox runs on x86 maybe this could have something to do, but I'm not sure. Thanks.

Modified by RaphaniacZX

Chosen solution

Most suggestion apply to Flash 11.3 and later and thus can be tried with Flash 11.4

You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin
Read this answer in context 2

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.4 r402
  • The plugin allows you to have a better experience with Microsoft SharePoint
  • Google Update
  • Next Generation Java Plug-in 10.7.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • VLC media player Web Plugin 2.0.2
  • 4.1.10329.0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:18.0) Gecko/18.0 Firefox/18.0

More Information

Application Basics
Name
Firefox
Version
18.0a1
User Agent
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:18.0) Gecko/18.0 Firefox/18.0
Profile Folder
Show Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Adblock Plus
2.1.2
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
DoNotTrackPlus
2.2.1.829
true
donottrackplus@abine.com
Empty Cache Button
2.0
true
{4cc4a13b-94a6-7568-370d-5f9de54a9c7f}
History Button
1.8
true
historybutton@darktrojan.net
Location Bar Enhancer
5.0
true
UIEnhancer@girishsharma
Menu Editor
1.2.7
true
{EDA7B1D7-F793-4e03-B074-E6F303317FB0}
ProxTube - Unblock YouTube
1.4.3
true
ich@maltegoetz.de
QuickPasswords
2.1
true
QuickPasswords@axelg.com
Rainbow
1.5.1
true
rainbow@colors.org
SpeedFox
0.9.11
true
jid1-uabu5A9hduqzCw@jetpack
Test Pilot
1.2.2
true
testpilot@labs.mozilla.com
Stratiform
3.0.1
false
Stratiform@SoapySpew
Important Modified Preferences
Name
Value
browser.cache.disk.capacity
1048576
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size.use_old_max
false
browser.cache.disk.smart_size_cached_value
358400
browser.places.smartBookmarksVersion
4
browser.sessionstore.interval
120000
browser.startup.homepage_override.buildID
20121005040203
browser.startup.homepage_override.mstone
18.0a1
dom.mozApps.runUpdate
false
extensions.lastAppVersion
18.0a1
gfx.direct3d.prefer_10_1
true
network.cookie.prefsMigrated
true
network.http.keep-alive
true
network.http.pipelining
true
network.http.pipelining.maxrequests
8
network.http.proxy.pipelining
true
places.database.lastMaintenance
1349656968
places.history.expiration.transient_current_max_pages
100530
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.warn_viewing_mixed
false
Graphics
Adapter Description
ATI Mobility Radeon HD 4200 Series
Vendor ID
0x1002
Device ID
0x9712
Adapter RAM
256
Adapter Drivers
aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64 atiumdag atidxx32 atiumdva atiumd6a atitmm64
Driver Version
8.961.0.0
Driver Date
4-5-2012
Direct2D Enabled
Blocked for your graphics driver version. Try updating your graphics driver to version > 12.8 or newer.
DirectWrite Enabled
false (6.2.8400.0)
ClearType Parameters
ClearType parameters not found
WebGL Renderer
Blocked for your graphics driver version. Try updating your graphics driver to version > 12.8 or newer.
GPU Accelerated Windows
0. Blocked for your graphics driver version. Try updating your graphics driver to version > 12.8 or newer.
AzureCanvasBackend
cairo
AzureFallbackCanvasBackend
none
AzureContentBackend
none
JavaScript
Incremental GC
1
Accessibility
Activated
0
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.2
4.9.2
NSS
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS Util
3.13.6.0
3.13.6.0
NSS SSL
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS S/MIME
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC

mm2012 1 solutions 19 answers

Flash 11.3 doesn't load video in Firefox

Firefox users with Flash 11.3 and RealPlayer installed have reported that Flash videos or games on sites like Facebook or YouTube may appear, black, white or grey and never play. This can be fixed by updating to the latest version of RealPlayer. Table of Contents

   Solution 1: If you have RealPlayer installed - update it
   Solution 2: Downgrade Flash

https://support.mozilla.org/en-US/kb/flash-113-doesnt-load-video-firefox

Helpful Reply

Thanks for the reply, but I think you didn't read what I wrote. I'm using Flash 11.4, not 11.3, and I don't got crash issues, I got performance issues. Please take the time to read the details before posting something just like that.

cor-el
  • Top 10 Contributor
  • Moderator
10753 solutions 96760 answers

Chosen Solution

Most suggestion apply to Flash 11.3 and later and thus can be tried with Flash 11.4

You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin

Helpful Reply

THANK YOU SO MUCH. I turned off the hardware acceleration/protected mode just as the page cited and now my flash content is working back again flawlessly, thanks a lot for the help. Hope it helps more people.

Super_Dave 0 solutions 1 answers

Hi,

My flash player is showing all the symptoms described in this article: http://kb.mozillazine.org/Flash#Flash_Player_11.3_Protected_Mode_-_Windows. I disabled the hardware acceleration and turned off protected mode. Since that didn´t work, I downgraded my flash player following the instructions in https://support.mozilla.org/en-US/kb/flash-113-doesnt-load-video-firefox. Still no change. Video playback and flash games are still laggy and choppy. My laptop is fairly new and the specs are all pretty decent. So I don´t think that´s the problem.

Any suggestions?

Thanks in advance.

Modified by Super_Dave