Can we get a screenshot of task manager performance tab? It will be helpful to see what your working with.

Press Shift+Esc to see the Firefox task manager and identify the processes causing issues.

Can we get a screenshot of task manager performance tab? It will be helpful to see what your working with.

That's not the performance tab. Here's a bit more info on what's going on.

Introducing Firefox’s new Site Isolation Security Architecture https://hacks.mozilla.org/2021/05/introducing-firefox-new-site-isolation-security-architecture/

Firefox's Project Fission: better security and more processes https://www.ghacks.net/2019/02/07/firefoxs-project-fission-better-security-and-more-processes/

Enable or Disable Fission in Firefox https://www.ghacks.net/2020/09/20/you-can-try-firefoxs-site-isolation-feature-fission-in-nightly-now/

Another user with the same issue. https://support.mozilla.org/en-US/questions/1401082#answer-1557050

Sorry, I didn't know until now that the browser had a taskmanager. Here's the screenshot.

Note that there have been performance issues reported with Kaspersky.

You can reduce the number of non-essential processes by installing a blocker like uBlock Origin.

To investigate a high-usage process, hover over it in the Process Manager and click the speedometer icon.

Sorry, I didn't know until now that the browser had a taskmanager. Here's the screenshot.

Not the browser, but Windows Task manager Performance Tab.

Firefox comes with a Task Manager as one of the developer tools (about:processes; Shift+Escape).

• "3-bar" menu button -> Web Developer or Tools -> Browser Tools -> Task Manager
• 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-or-cpu-resources
• https://support.mozilla.org/en-US/kb/quick-fixes-if-your-firefox-slows-down