tbh...you can disable anything you do not use. Once disabled....they will not run in the background and use resources. They will not prompt you to update them and they won't show up in the app drawer. So for all purposes...they are gone. They don't run and they don't use system resources.
And you don't need root or any special app to do what i described above.
But how many of these processes aren't just specific apps but rather maybe obscurely labeled system level processes? Trying to identify these and inadvertently disabling something essential could lead to even worse performance problems. I admit I haven't dove into the recent versions of TouchWiz and it may very well be quite clear cut...don't remember it being that way in the past.
My only point is that users shouldn't have to do that and thankfully, it seems that doing so is less necessary if at all since S7 performance seems pretty damn smooth.
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