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Excessive RAM use while restoring window

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Is there a way to restore a window using less RAM, or if applicable, with regular garbage collection during the process?

While restoring a previously closed window, significantly more RAM is used than when reopening a session, for the same amount of tabs. So if the window ever gets closed and that state saved, I need to revert to a previous session backup. Attempting to restore the window caused ram usage to go up to 30 gigabytes and beyond, at which point I stopped the process out of caution. In contrast reopening the browser with the tabs normally is only about 5 gigabytes.

I regularly use Firefox with thousands of tabs open. This is usually not an issue but in some cases leads to performance issues like these.

Is there a way to restore a window using less RAM, or if applicable, with regular garbage collection during the process? While restoring a previously closed window, significantly more RAM is used than when reopening a session, for the same amount of tabs. So if the window ever gets closed and that state saved, I need to revert to a previous session backup. Attempting to restore the window caused ram usage to go up to 30 gigabytes and beyond, at which point I stopped the process out of caution. In contrast reopening the browser with the tabs normally is only about 5 gigabytes. I regularly use Firefox with thousands of tabs open. This is usually not an issue but in some cases leads to performance issues like these.

Modified by oSpre