hi bridgebuilder, could you capture and share a performance profile while the problem is occurring like it's described at https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Reporting_a_Performance_Problem (you can leave out steps 1-3 about installing the latest nightly).

maybe this can give us some clues what is going wrong. thank you!

one more thing that i have just noticed when looking at your system details - can you please test if the following steps can fix the performance issue you're seeing in firefox 57?: enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named accessibility.force_disabled. double-click it, change its value to 1 and restart firefox once.

then please let us know how this goes?

My computer was a bit slow but after I installed the latest update it has been terrible. It freezes up on me after only a few minutes after I reboot. I have tried to reset it to the older version with no luck. I am stuck on a new completely unusable "faster system" The REFRESH page I am taken to freezes up and Mozilla Firefox is my browser, as it says it won't work if it isn't. I am getting so frustrated that I am contemplating changing to another broser so I can use my computer without it locking up on me.

Sorry I am new here and thought this was to support staff not to answer you problem.