Why exactly do skins like TouchWiz (Samsung Experience) slow phones down compared to the stock Android? Adding a handful of apps/features can not be the sole culprit? - Quora
Software: TouchWiz UX and Edge UX - The Samsung Galaxy Note5 and Galaxy S6 edge+ Review
What is Touchwiz? - Android Authority
Software: TouchWiz UX - The Samsung Galaxy S6 and S6 edge Review