This isn't standard. What games(s) are you playing that do this?
By default, holding down Shift while walking will make the character move faster. Usually there's also a setting in the Options menu that makes you run instead of walk, without having to hold Shift.
Recently I was playing
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. You can see on head of mc a thought bubble with "..." In it. If you watch from start there are also heart/question thought bubble. This only take may be less than second to appear and disappear but they don't skip by clicking.
By walk, I don't mean manual walk (which I know can be speed up by shift), I am talking about in scene walk for
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. Although in example a side character is walking but same type walk sometime mc does.