Disable automatic refresh
From the chrome address bar, type the command chrome: // flags then validate with the Enter key. This gives access to the experimental features of Chrome.
Look for the automatic-tab-discarding setting, it is called Automatic tab removal in the French version of Chrome. By default this option can be activated.
To deactivate it, choose Deactivated in the drop-down menu of the setting.
After restarting, the content of the tabs will no longer be automatically updated.
From the chrome address bar, enter the command about: config
Click on I take the risk
In the hidden options page go down
Double click on it to pass the value on True
Close Firefox then relaunch