Is this with many websites, some, a few?

https://support.mozilla.org/en-US/kb/update-firefox-latest-version?cache=no Did you update Firefox to the latest version 67.0.2 June 11, 2019

well most of websites and yes its updated no diffrence here is twitter performance record

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

How to disable Hardware Acceleration {web link}

mentioned in first that i did all that and i want HA for smooth scroll why should i disable it? all other browsers working nice the problem is with recent version in addition tried all graphic drivers from 3 months ago same result

What is the Firefox memory and CPU usage when this happens?

• https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

You can check the Firefox Task Manager (about:performance) and about:memory pages.

• https://support.mozilla.org/en-US/kb/task-manager-tabs-or-extensions-are-slowing-firefox
• https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram

Cpu and Ram seem normal as it is working normally without lagging as a clean install(I tested all steps at the begin and to be specific before we had more detailed task manager tabs but now it shows energy impact which said the tab is medium, checked with procmon, . . .), no Hard Disk block or anything but it seems like a Garbage Collecting lag when too fast scroll more lag you face. and tested on other machines some more powered rigs had the issue but some didn't.

pineapplethief said

mentioned in first that i did all that and i want HA for smooth scroll why should i disable it? all other browsers working nice the problem is with recent version in addition tried all graphic drivers from 3 months ago same result

Hi pineapplethief,

The reason we are requesting you turn off Hardware Acceleration is that we are trying to diagnose whether the issue is caused by HA or not. Can you please turn it off and see if the problem continues. If it does not we can look into troubleshooting specific problems with HA.

Thank you.

HammoTime said

pineapplethief said

mentioned in first that i did all that and i want HA for smooth scroll why should i disable it? all other browsers working nice the problem is with recent version in addition tried all graphic drivers from 3 months ago same result

Hi pineapplethief,

The reason we are requesting you turn off Hardware Accelleration is that we are trying to diagnose whether the issue is caused by HA or not. Can you please turn it off and see if the problem continues. If it does not we can look into troubleshooting specific problems with HA.

Thank you.

yes it happens with or without HA.

Can you please provide us the information from about:support? It is most likely this issue is related to Graphics issues. The troubleshooting information will list all the details we will need to investigate further.

Specific things we would be looking for are:

• Multiprocess Windows
• Asynchronous Pan/Zoom

To find the correct solution to your problem, we need some more non-personal information from you. Please do the following:

1. Use ONE of these methods to open the Firefox Troubleshooting Information page:
   • Click the menu button The image "fx57menu" does not exist., click on Help and select Troubleshooting Information.
   • Type about:support into the Firefox address bar and press the enter key.
2. At the top of the Troubleshooting Information page that comes up, you should see a button that says "Copy text to clipboard". Click it.
3. Now, go back to your forum post, right-click in the reply box and select Paste from the context menu (or else click inside the reply box and press the Ctrl+V keys) to paste the information you copied into the forum post.
   • Due to a forum reply character limit, only part of the data may be pasted. You can use your mouse to select the missing text from the about:support page, right-click on the page to copy it and then right-click in the forum reply box to paste it into a new reply.

Note: The Troubleshooting Information page does not contain personal data, except for the full path to your profile folder. When you use one of the "Copy to clipboard" buttons, the profile path is not copied. Use other tools and methods at your own risk.

If you need further information about the Troubleshooting information page, please read the article Use the Troubleshooting Information page to help fix Firefox issues.

Thanks in advance for your help!

HammoTime said

Can you please provide us the information from about:support? It is most likely this issue is related to Graphics issues. The troubleshooting information will list all the details we will need to investigate further. Specific things we would be looking for are:

• Multiprocess Windows
• Asynchronous Pan/Zoom

To find the correct solution to your problem, we need some more non-personal information from you. Please do the following:

1. Use ONE of these methods to open the Firefox Troubleshooting Information page:
   • Click the menu button The image "fx57menu" does not exist., click on Help and select Troubleshooting Information.
   • Type about:support into the Firefox address bar and press the enter key.
2. At the top of the Troubleshooting Information page that comes up, you should see a button that says "Copy text to clipboard". Click it.
3. Now, go back to your forum post, right-click in the reply box and select Paste from the context menu (or else click inside the reply box and press the Ctrl+V keys) to paste the information you copied into the forum post.
   • Due to a forum reply character limit, only part of the data may be pasted. You can use your mouse to select the missing text from the about:support page, right-click on the page to copy it and then right-click in the forum reply box to paste it into a new reply.

Note: The Troubleshooting Information page does not contain personal data, except for the full path to your profile folder. When you use one of the "Copy to clipboard" buttons, the profile path is not copied. Use other tools and methods at your own risk. If you need further information about the Troubleshooting information page, please read the article Use the Troubleshooting Information page to help fix Firefox issues. Thanks in advance for your help!

https://pastebin.com/QRCW7L18