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Computer is slow to respond when mouse is clicked and typed letters appear after a delay of several seconds

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rosemary009
rosemary009
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When I type or start to type the characters appear after a delay. Scrolling up and down and clicking on some tabs or links is very slow.

When I type or start to type the characters appear after a delay. Scrolling up and down and clicking on some tabs or links is very slow.

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cor-el
cor-el
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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

It is possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Firefox Profile Folder.

Delete the sessionstore.js [2] file and possible sessionstore-##.js [3] files with a number and sessionstore.bak in the Firefox Profile Folder.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).

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