In my experience, two files were left with Firefox. 1 with your own profile and cache and 1 for installation.
I have looked at the entire install currently which is 347MB with a size of over two folders, but 100 of them are my maximum cache and get deleted on shutdown.
I see speed claims everywhere, but when I look at the tests it’s a dime of change.
It’s all stock for that matter. By the way, the browser and the whole computer are far from being stored, I’m still trying to change everything and shrink everything, and it worked even better with Firefox.
Switching between tabs can be faster in my case, I have most of all tabs open so I can’t see any if the browser isn’t at the top.
So this slows things down as I can now see all my windows directly without having to open the browser first.
I’m also not at risk of opening something in a feed or sharing a desktop that others aren’t allowed to see.
In terms of timing, it can be. I don’t have this need. I keep my phones and tablets completely separate from my computer, even on my network they are isolated from each other. All of my tablets and phones are syncing. I have Chrome on tablets and phones because tabs work better like Firefox with annoying tab window, on top of that Chrome is also there with lots of snippets and other stuff you can’t disable from last year’s versions because it intentionally used the command line. (Just like many other command lines).
The amount of chrome you use depends largely on the content you open. The broadcast board is really a disaster in my experience. There seems to be a lot of buffering.
And yes, I also read that there have been a lot of improvements but not enough yet, and for me tabs and browser cleanliness are basically the deciding factors. (Most of my other programs are independently portable. They perform better and give a more modular feel, which gives me flexibility.
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