Introduction:
If you are using Firefox and SSD drive(s) then according to this site:
https://www.servethehome.com/firefox-is-eating-your-ssd-here-is-how-to-fix-it/
it is very recommended to make the small configuration change in Firefox to extend the life of your SSD.

Reason:
SSD Drives do have a lifespan depending on how many times we write to it. Therefore the function of regular saving of session found in Firefox reduces the life expectancy of SSDs.
By default it saves every 15 Sec. It is recommended to at least raise this to 30 Min. for example.

Steps:
Enter the following URL in your browser:
about:config
The search in the lists of configurations the item called:
browser.sessionstore.interval
Right click the mouse and select Modify
Since these values are in Milliseconds to make it 30 Min.(30x60x1000) this value should then be changed to:1800000

You can find also some extra information in this regard in the above web site where i took this valuable information.