So, in tSo, in the latest update which happen nearly as often as Windows, you bodlly proclaim it to be "your Firefox" - Really?really?

[Atttaboyslim]

There was a time when Mozilla Firefox was the safest, fastest and most secure browser but with the constant updates, you have created a boated connection to the WEB that uses far too many system resources and this ended your fast browser classification. There have been times when over a dozen processes were running and at the moment, task manager shows 15 Firefox processes that are consuming nearly 1,000 mb's of memory while controlling  as much as 4.4% of my CPU and this is no longer acceptable. That kind of consumption causes pages to load very slowly, video play back or game play where videos freeze, fail to play or constantly buffer and games don't open but these are the beginning but it does get worse. Tabs become unresponsive to mouse and keyboard commands and this is followed by the browser crashing and the only remedy is to restart the system. The frustration is tremendous  and so my suggestion is for you  to stop trying to fix a system that you busted. Kenneth Pressley  - attaboyslim@yahoo.com

[siffemcon]

Try these one at a time, checking after each.

See what happens in Troubleshoot mode (https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-...)

Via the address bar, go to about:config > search for accessibility.force_disabled > change the value to 1 > click check mark > restart FF

Clear the browser cache:
- press Ctrl-Shift-Delete (Mac: Cmd-Shift-Delete)
- set 'Time range...' to 'Everything'
- untick all items except 'Temporary cached files and pages'
- clear, then restart FF

Turn off hardware acceleration:
- go to FF Menu > Settings and enter 'hardware' (no quotes) in the search box
- uncheck 'Use recommended performance settings' > uncheck 'Use hardware acceleration when available'
- restart FF

Disable Efficiency mode: in about:config, change dom.ipc.processPriorityManager.backgroundUsesEcoQoS to false > restart FF

Disable VPN if you're using one

Change proxy settings: FF menu > Settings > search for proxy > click Settings button > try the other settings

Change DNS settings: FF menu > Settings > search for dns > try the other settings including another provider

If using proxy and UBlock Origin, in UBO settings disable 'Uncloak canonical names'

Disable security software http/ssl scanning if possible

Check about:processes and about:memory

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If nothing helps, you could file a bug:

- via the address bar, go to about:crashes and submit all pending crash reports. Copy the ID of the most recent report.

- via the address bar, go to about:support > click 'Copy text to clipboard' > paste to a text editor and save it as a plain text file

- via the address bar, open about:memory in a new tab > click 'Measure and save'

- file the bug at https://bugzilla.mozilla.org. Choose the 'Report a new bug in a Mozilla product' > Firefox option.

- click the 'Attach New File' button to upload your saved files. Also mention your last crash ID.