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speedtest on firefox is slower than a speedtest on internet explorer i'm talking the halve slower...

Posted

when i do a speedtest on speedtest.net i should see a speed result of above 100 mbit cause my connection is 120 mbit down

in firefox its always halve like 50 mbit max and in internet explorer it shows the correct speed...

before i never had problems with firefox but with the new updates not...

Chosen solution

speedtest uses flash for speed measurements & adobe has introduced a special protected mode for its flash plugin only for firefox, which might cause slowdowns when there is interference between the following processes (so you might not observe it on IE or other browsers): firefox.exe, plugin-container.exe & FlashPlayerPlugin_11*.exe - please make sure that norton's firewall or av-engine isn't blocking/sandboxing them in any way.

alternatively you can also try disabling the protected mode for adobe flash & see if this is making a difference...

Read this answer in context 2

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More Information

iamjayakumars
  • Top 10 Contributor
416 solutions 4930 answers

Update your firefox to Firefox 18 and check it out...

Question owner

there's a slight improvement but when i test it more than 1 times sometimes its back to unstabile, and in iE it stays stabile.

Modified by broken

philipp
  • Top 10 Contributor
  • Moderator
2046 solutions 8901 answers

hello, could you tell us which kind of security software is running on your pc?

Question owner

norton internet security 2013

Question owner

Its really hard to get an accurate speed test meeting in firefox always shows 60 Mbit and in IE it always goes way over 100Mbit...

When i tested it 5 times with the new firefox version 18 out of 5 imes it went 1 time over 100Mbit which was a good result of the speedtest. But now its showing way lower agin... Likz 50 , 60 Mbit

And if i test it 10 times with IE i get overal the same results.


I also noticed the flashplayer from http://www.speedtest.net/ is like hanging its not fluid at all and i updated that aswell..

Just tested it the flashplayer with the speedtest in IE and agin stabile as hell... Nothing like the problems FF is showing me.

Modified by broken

philipp
  • Top 10 Contributor
  • Moderator
2046 solutions 8901 answers

Chosen Solution

speedtest uses flash for speed measurements & adobe has introduced a special protected mode for its flash plugin only for firefox, which might cause slowdowns when there is interference between the following processes (so you might not observe it on IE or other browsers): firefox.exe, plugin-container.exe & FlashPlayerPlugin_11*.exe - please make sure that norton's firewall or av-engine isn't blocking/sandboxing them in any way.

alternatively you can also try disabling the protected mode for adobe flash & see if this is making a difference...

Question owner

Well @madperson your trick solved the problem i had for ages... With the flashplayer on ProtectedMode=0 it works like a charm. Now my question is do i have to leave the flashplayer like this? on ProtectedMode=0?

John99
  • Top 25 Contributor
  • Moderator
622 solutions 8022 answers

Hi broken,

In light of your post above I have taken the liberty of marking the thread solved with madperson's answer.

Unfortunately Firefox (Windows) has been having problems with protected mode and FlashPlayer for some months now. Turning off protected mode is not ideal, and some users find it a rather difficult procedure, but until and unless a permanent fix is available from Adobe FlashPlayer then it may be necessary to turn off protected mode.

You could also consider speeding things up by not using FlashPlayer unnecessarily, maybe considering something like no-script to block unwanted instances. (The click to play feature may also be useful https://blog.mozilla.org/security/2012/10/11/click-to-play-plugins-blocklist-style/ )

philipp
  • Top 10 Contributor
  • Moderator
2046 solutions 8901 answers

unfortunately this is most probably influenced by external factors so mozilla can't do much about addressing the issue...

i'm not familiar with norton's software, but we had reports that other security software (old versions of f-secure) did intefere with the flash protected mode and cause cause slowdowns when a function named "enhanced process monitoring" was enabled.

you might want to try setting ProtectedMode=1 again and experiment with your norton settings - in case there is an options to whitelist certain applications from in-depth scanning/sand-boxing/etc please add firefox.exe, plugin-container.exe (located in the mozilla firefox program folder) & FlashPlayerPlugin_11*.exe (located in C:\Windows\SysWOW64\Macromed\Flash) to this list.

Question owner

But what does protected mode 0 do can it be harmfull if i leave it like this?

What can happen?

philipp
  • Top 10 Contributor
  • Moderator
2046 solutions 8901 answers

protected mode is an additional security measure introduced by adobe 6 months ago that makes flash content run in a container with low rights to make it harder for malicious code to infect other parts of the system...

for more technical details on it see http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html

Question owner

I'll leave it like this than, thanks to all the people who helped and replyd.

Thank u.

PeterB1970 0 solutions 5 answers

I had this problem to since 11.3 came out. 11.2 worked fine. As the op said, ie was fine and ff results on speedtest.net were half speed, all over the place, choppy and unreliable. I have just turned protected mode to 0 and it's same as ie now, nice and smooth and 127Mbit down, nice and steady.

Here is a video I found that demonstrates the problem I had.

I have microsoft security essentials. Disabling didn't do anything.

Here is a strange thing though, I was using fraps (screeen recorder) to record what happens when I upgraded flash to a version higher than 11.2 and while fraps is running, the speedtest.net result was fine, just like ie. Exit Fraps and the problem returns. Q) what is Fraps doing to make flash work in protected mode?

Modified by PeterB1970

Question owner

How do i disable this please care to explain :p

protected mode to 0 ?
PeterB1970 0 solutions 5 answers

Hi Broken, I thought you already knew how to do this when you replied to madperson. "Well @madperson your trick solved the problem i had for ages... With the flashplayer on ProtectedMode=0 it works like a charm"

To disable Protected Mode, add the following line to your mms.cfg file located in:

Windows 32bit: C:\windows\system32\macromed\flash

Windows 64bit: C:\windows\syswow64\macromed\flash

ProtectedMode=0

Modified by PeterB1970

Question owner

Nope didn't know thanks man :)

Question owner

Btw what i always did was disable hardware acceleration in firefox, doesn't help either though. i'll try your method, thanks.

Question owner

I have no mms.cfg file in there... Just dll's and uninstallers and plugins.

PeterB1970 0 solutions 5 answers

Create one using notepad. If you can't see file extensions, (i'm using vista)

Start > Settings > Control Panel > Folder Options > View Tab >

Uncheck 'hide extensions for known file types'

Then rename your .txt to .cfg

Modified by PeterB1970

Question owner

You edited previous link for the folder Peter cause now i see the textfile, thanks :D

Modified by broken