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Shockwave Flash very slow on Windows 10 Pro

Ray
Paskelbta

I use Firefox v66.0.2 on Windows 10 Pro and on my weather website that has Flash links to external sites to display the Moon's phase and World City Times the placeholders to populate that info has become very slow indeed. It can take well over 40 seconds to show the times.

Using the same version of Firefox on a Windows 7 64-bit PC the data displays in seconds. Using Microsoft Edge on Windows 10 it's also very quick. Only Firefox / Windows 10 seems to be the problem.

I have tried resetting things but to no avail. It's been like this for a couple of months now. My website has been unchanged in years. http://www.cheadlehulmeweather.co.uk

Can you assist please?

I use Firefox v66.0.2 on Windows 10 Pro and on my weather website that has Flash links to external sites to display the Moon's phase and World City Times the placeholders to populate that info has become very slow indeed. It can take well over 40 seconds to show the times. Using the same version of Firefox on a Windows 7 64-bit PC the data displays in seconds. Using Microsoft Edge on Windows 10 it's also very quick. Only Firefox / Windows 10 seems to be the problem. I have tried resetting things but to no avail. It's been like this for a couple of months now. My website has been unchanged in years. http://www.cheadlehulmeweather.co.uk Can you assist please?

Modified by Ray

Chosen solution

The problem has resolved itself I'm pleased to report. My Flash content now displays in a few seconds. I tried all the things suggested but they made no difference. So I just turned off Flash content.

But today - after a few Firefox updates and a major Windows 10 one to 1903 - I'm pleased to report my website is now fine.

Thought you'd like to know. This can now be closed.

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jscher2000
  • Top 10 Contributor
Sprendimų: 8635 Atsakymų: 70627

Hi Ray, I tested in a private window on Firefox 66.0.2 on Windows 10.

It didn't seem too slow after I activated Flash, maybe 6 seconds. When I did a full reload of the page (Ctrl+Shift+r), since Flash already had permission, the Flash bits ran within a couple seconds. This is a fast computer on a fast connection, so it certainly could be a bit slower for you, but 40 seconds is definitely extreme.

If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally:

Double-check content blockers: Firefox's Content Blocking feature and extensions that counter ads and tracking may break websites that embed third party content (meaning, from a secondary server).

(A) Do you see a shield icon toward the left end of the address bar, near the lock icon? More info on managing the Tracking Protection feature in this article: Content blocking.

(B) Extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix should provide toolbar buttons to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you may need to click the button to see what's going on and test whether you need to make an exception for this site.

Cache and Cookies: When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:

  • right-click (on Mac Ctrl+click) a blank area of the page and choose View Page Info > Security > "Clear Cookies and Site Data"
  • (menu bar) Tools > Page Info > Security > "Clear Cookies and Site Data"
  • click the padlock or "i" icon in the address bar, then the ">" button, then More Information, and finally the "Clear Cookies and Site Data" button

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?

Testing in Firefox's Safe Mode: In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.)

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" Help > Restart with Add-ons Disabled
  • (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

Hi Ray, I tested in a private window on Firefox 66.0.2 on Windows 10. It didn't seem too slow after I activated Flash, maybe 6 seconds. When I did a full reload of the page (Ctrl+Shift+r), since Flash already had permission, the Flash bits ran within a couple seconds. This is a fast computer on a fast connection, so it certainly could be a bit slower for you, but 40 seconds is definitely extreme. If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally: '''Double-check content blockers:''' Firefox's Content Blocking feature and extensions that counter ads and tracking may break websites that embed third party content (meaning, from a secondary server). (A) Do you see a shield icon toward the left end of the address bar, near the lock icon? More info on managing the Tracking Protection feature in this article: [[Content Blocking]]. (B) Extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix should provide toolbar buttons to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you may need to click the button to see what's going on and test whether you need to make an exception for this site. '''Cache and Cookies:''' When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site. (1) Clear Firefox's Cache See: [[How to clear the Firefox cache]] If you have a large hard drive, this might take a few minutes. (2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either: * right-click (on Mac Ctrl+click) a blank area of the page and choose View Page Info > Security > "Clear Cookies and Site Data" * (menu bar) Tools > Page Info > Security > "Clear Cookies and Site Data" * click the padlock or "i" icon in the address bar, then the ">" button, then More Information, and finally the "Clear Cookies and Site Data" button In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites. Then try reloading the page. Does that help? '''Testing in Firefox's Safe Mode:''' In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem. ''If Firefox is not running:'' Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.) ''If Firefox is running:'' You can restart Firefox in Safe Mode using either: * "3-bar" menu button > "?" Help > Restart with Add-ons Disabled * (menu bar) Help menu > Restart with Add-ons Disabled and OK the restart. ''Both scenarios:'' A small dialog should appear. Click "Start in Safe Mode" (''not'' Refresh). Any improvement?
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FredMcD
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Sprendimų: 4224 Atsakymų: 58947

I tried the link using Win7 Firefox v54 It loaded in 10 seconds. Nice website.

When I used v66.0.2 it loaded in 8 seconds.

I tried the link using Win7 Firefox v54 It loaded in 10 seconds. Nice website. When I used v66.0.2 it loaded in 8 seconds.
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Klausimą uždavęs asmuo

@jscher and Fred, thank you both for your help. This site is owned by myself and has no adverts. I don't host it. That's taken care of by a UK company HostPresto and their service has been great.

So whilst I do run AdBlocker I have disabled it for my site and it has made no real difference. I have cleared the cache and cookies. I run CCleaner (free) and clean up web browsing data and cookies every couple of days except for the sites I regularly visit including my weather site - www.cheadlehulmeweather.co.uk.

Looking in the status bar the delay appears to be down to retrieving data from external sources such as LocalTimes for the time banner. That is taking around 24 seconds with the other sites far less. Do you see such a delay on your computers?

I tried in Safe Mode but that made hardly any difference. Still around 20 secs for the time banner and the moon phase.

It's a Dell XPS15 laptop with an i5-8300H @2.3Ghz with 8Gb RAM and a fast SSD. Given my website loads quicker on another W10 PC do you think there are settings in Windows itself that may be responsible?

@jscher and Fred, thank you both for your help. This site is owned by myself and has no adverts. I don't host it. That's taken care of by a UK company HostPresto and their service has been great. So whilst I do run AdBlocker I have disabled it for my site and it has made no real difference. I have cleared the cache and cookies. I run CCleaner (free) and clean up web browsing data and cookies every couple of days except for the sites I regularly visit including my weather site - www.cheadlehulmeweather.co.uk. Looking in the status bar the delay appears to be down to retrieving data from external sources such as LocalTimes for the time banner. That is taking around 24 seconds with the other sites far less. Do you see such a delay on your computers? I tried in Safe Mode but that made hardly any difference. Still around 20 secs for the time banner and the moon phase. It's a Dell XPS15 laptop with an i5-8300H @2.3Ghz with 8Gb RAM and a fast SSD. Given my website loads quicker on another W10 PC do you think there are settings in Windows itself that may be responsible?
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FredMcD
  • Top 10 Contributor
Sprendimų: 4224 Atsakymų: 58947

Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia

Start your '''Computer''' in safe mode with network support. Then start Firefox. Try '''Secure''' websites. Is the problem still there? http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia
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Chosen Solution

The problem has resolved itself I'm pleased to report. My Flash content now displays in a few seconds. I tried all the things suggested but they made no difference. So I just turned off Flash content.

But today - after a few Firefox updates and a major Windows 10 one to 1903 - I'm pleased to report my website is now fine.

Thought you'd like to know. This can now be closed.

The problem has resolved itself I'm pleased to report. My Flash content now displays in a few seconds. I tried all the things suggested but they made no difference. So I just turned off Flash content. But today - after a few Firefox updates and a major Windows 10 one to 1903 - I'm pleased to report my website is now fine. Thought you'd like to know. This can now be closed.
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FredMcD
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Sprendimų: 4224 Atsakymų: 58947

That was very good work. Well done.

That was very good work. Well done.
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cor-el
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  • Moderator
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Note that you can use the Network Monitor and check the timing column to see what items take very long to load.

Note that you can use the Network Monitor and check the timing column to see what items take very long to load. *"3-bar" menu button or Tools -> Web Developer *https://developer.mozilla.org/en-US/Tools/Network_Monitor
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