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Multiple tabs in one window or multiple windows with fewer tabs?

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I have 100+ tabs in 7 windows. Routinely. From the viewpoint of performance what is better:

1. One window + TabGroup Manager (Tabs within tabs) + 100 tabs + only used tabs loaded (I have unload tab addon) 2. 7 windows + multiple tabs in each window + only used tabs loaded (I have unload tab addon)

I have 100+ tabs in 7 windows. Routinely. From the viewpoint of performance what is better: 1. One window + TabGroup Manager (Tabs within tabs) + 100 tabs + only used tabs loaded (I have unload tab addon) 2. 7 windows + multiple tabs in each window + only used tabs loaded (I have unload tab addon)

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I didn't think that tab groups was anymore. From a performance standpoint both use the same memory afaik. about:memory could tell you otherwise.