Flash in Firefox performance is terrible compared to other browsers

I have been having this problem with Firefox for over a year now, and nothing changes. So many updates and this problem still persists. I have read several possible fixes for this issue, yet nothing works. It is strange that many users have complained about this issue and Mozilla has done nothing to fix it.
At the moment, I'm at the breaking point with this browser. Sometimes pages freeze while loading, and other browsers don't have this problem either. You mean to tell me that even Internet Explorer performs better than Firefox when it comes to watching videos online and loading pages without freezing?
I remember when I use to think the issue has a lot to do with my slow computer. After getting a better one with 8GB of RAM, the problem still shows its ugly head
You guys are joking. Either fix this long running problem, or exit the browser market.

Hello,
Try disabling graphics hardware acceleration. Since this feature was added to Firefox, it has gradually improved, but there still are a few glitches.
You might need to restart Firefox in order for this to take effect, so save all work first (e.g., mail you are composing, online documents you're editing, etc.).
Then perform these steps:
#Open Firefox ''Options'' window (''Preferences'' on Mac or Linux) as follows:
#* In Firefox 29.0 and above, click the menu button [[Image:New Fx Menu]] and select ''Options'' for Windows or ''Preferences'' on Mac or Linux.
#* In Firefox 28.0 and previous versions, click the orange Firefox button at the top left, then select the "Options" button, or, if there is no Firefox button at the top, go to Tools > Options.
#In the Firefox Options (or Preferences) window, click the ''Advanced'' tab, then select ''General''.
#In the settings list, you should find the ''Use hardware acceleration when available'' checkbox. Uncheck this checkbox.
#Now, restart Firefox and see if the problems persist.
Additionally, please check for updates for your graphics driver by following the steps mentioned in the following Knowledge base articles:
* [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]
* [[Upgrade your graphics drivers to use hardware acceleration and WebGL]]
Did this fix your problems? Please report back to us!
Thank you.

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My problem started a few weeks ago, I tried playing a flash game, first it came up that i didnt have flash, which I did, so I ran an update but I already had the latest version.
I gave up on the games on that page and went to newgrounds.com, but turns out everytime I try to play a game the controls wont work properly on any game.
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Hi gorgonzola357, there are some platform-specific differences between Windows 7 and MacOSX that may be relevant.
Have you tried disabling the new protected mode in Flash 11.3, since that feature is currently being debugged? See this support article from Adobe under the heading "Last Resort": [http://forums.adobe.com/message/4468493 Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?]

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You could try this trick:
* http://forums.mozillazine.org/viewtopic.php?f=38&t=2323823

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Create a new profile as a test to check if your current profile is causing the problems. 
See '''Creating a profile''':
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem 
'''Profile Backup and Restore'''
*http://kb.mozillazine.org/Profile_backup
*https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

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i am developing a site and i used divs in making the arrangements.
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i gave all the divs a border with a red color, all the other browsers(explorer, opera, chrome and safari ) shows the divs with the colors but firefox does not even show the red color

Can you post a test case demonstrating the problem? It doesn't need to contain confidential content or active links. (This forum doesn't handle raw HTML very well, so I don't recommend pasting code here unless you convert your angle brackets to HTML entities.)

Why is the font in FireFox 5 not sharp as in other browsers ?

I have been using Firefox browser since many years and have been comfortable with its features. However, of late, after I upgraded to Firefox 5, the font in the browser doesn't seem as sharp as it is in other browsers, like IE8 or Chrome 12. I have a laptop with 64-bit Windows 7 Home Premium with a 2Gb NVidia graphics card/chip.
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Try to disable hardware acceleration.
*Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.
See also:
*Anti-Aliasing Tuner: https://addons.mozilla.org/firefox/addon/anti-aliasing-tuner/

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Contrary to how it may look, this is an issue with the Google Earth Plugin and not with FireFox. This support forum is for questions related to the products listed on the main support page directly only. As such this question is off topic for this forum.
However, I reccomend openening a thread on the Google Earth plugin forum at https://productforums.google.com/forum/#!categories/earth/problems-and-errors
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Hi karnack1,
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i7 930 @ 3.8GHz, 6GB RAM@1600MHz, Intel SSD and Nvidia 660 Ti 2GB.
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But somehow, Firefox doesn't seem to care.
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As I have seen That you have installed so much extension which is the main reason behind the slowness. Since they need some memory each time you start working with firefox.
However do try to disable those extensions which are not used regularly ,when you need to used them just enable from addons section.
Also try with [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Safe Mode] and check whether the problem still persist or not.
Read This Thread : [http://mzl.la/1BAQIeY Many CPU Processes]
These are some steps will help you to fix issues like slowness:
If monitoring tools shows High ram used by firefox then it might be due to Hardware acceleration enabled . Uncheck them from '''Options'''>'''Advance''' >under '''General''' tab.
Sometimes plugins becomes the cause,so Check whether all plugins are up to dated or not from '''Addons''' >'''Plugins''' tab.
See this thread for other reasons : http://mzl.la/14CBA3o

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I have de-installed and re-installed and problem remains.
The Problem signature:
Problem Event Name: APPCRASH
Application Name: firefox.exe
Application Version: 24.0.0.5001
Application Timestamp: 522fd29f
Fault Module Name: ntdll.dll
Fault Module Version: 6.1.7601.18205
Fault Module Timestamp: 51db96c5
Exception Code: c0000005
Exception Offset: 00052c26
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 2057
Additional Information 1: e8ad
Additional Information 2: e8adce1c2b9e7be834b4063ac3c53863
Additional Information 3: e8ad
Additional Information 4: e8adce1c2b9e7be834b4063ac3c53863

Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:
'''Note:''' You might want to print these steps or view them in another browser.
#Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
#After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
#Delete the Firefox installation folder, which is located in one of these locations, by default:
#*'''Windows:'''
#**C:\Program Files\Mozilla Firefox
#**C:\Program Files (x86)\Mozilla Firefox
#*'''Mac:''' Delete Firefox from the Applications folder.
#*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory.
#Now, go ahead and reinstall Firefox:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
Please report back to see if this helped you!

YouTube videos load so slow compared to other browsers

YouTube videos are completely downloading in memory from the start, slowing down the PC a great deal.
So if I try to watch a 20-min 1080p video, I have to wait ~20-30 secs to load completely in the memory. Only after that can I watch it without the PC freezing completely.
How can I get back to the original functionality, where the videos were downloaded incrementally as you watched them?
My setup is: Intel Core2Duo 2.2, 3.2 GB RAM 800MHz, ATI Radeon HD 5670 w/1GB memory, 100Mbit broadband (~8-10 MB/s with youtube servers)
However, Chrome for example loads flawlessly with almost no lag. But I love Firefox and don't want to switch to anything else...
Please let me know if you have any ideas.
Thanks in advance,
Nicolae

Hello,
Thanks jscher2000 and cor-el for the support.
I disabled all the plugins beside Shockwave Flash, still the YouTube videos freeze the PC until completely loaded, eating 100% of my CPU.
My only Add-ons now (when I re-enabled them) are:
* Shockwave Flash
* Adobe PDF
* Google Update
* JRE 7u7
* App Button Color
* Firebug
* Live HTTP Headers
However, I noticed a few more things:
* The Firefox PC-freezing occurs mostly on high-resolution videos (1080p)
* Chrome puts his video download/processing thread on a lower priority somehow, so the CPU is at 100% too, but the other programs (including the video stream itself) are not affected
* Putting Firefox and Chrome side-by-side with the same video stream, 1 real-life minute will allow Firefox to play ~1:02 min of YouTube video, while Chrome remains at ~0:58.
I also attached a screenshot of my PC streaming on both browsers, maybe that will help anyone.
Thanks again for all your support,
Nicolae

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any suggestion on how to fix it?
i am also attaching the snippet of a page of my website when it is opened in Ubuntu-firefox.
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Hello,
Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
Note: ''This will temporarily log you out of all sites you're logged in to.''
To clear cache and cookies do the following:
#Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
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Did this fix your problems? Please report back to us!
Thank you.

Flash in Firefox performance is terrible compared to other browsers

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